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107865000031 = 1047111030121
BaseRepresentation
bin110010001110101000…
…0010100100001011111
3101022102022000202000011
41210131100110201133
53231401420000111
6121315201144051
710535665241515
oct1443520244137
9338368022004
10107865000031
1141821a87028
1218aa392b027
13a2300a6309
1453138264b5
152c1496a021
hex191d41485f

107865000031 has 4 divisors (see below), whose sum is σ = 107866134864. Its totient is φ = 107863865200.

The previous prime is 107864999969. The next prime is 107865000071. The reversal of 107865000031 is 130000568701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130000568701 = 791645576819.

It is a cyclic number.

It is not a de Polignac number, because 107865000031 - 29 = 107864999519 is a prime.

It is a super-2 number, since 2×1078650000312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 107864999957 and 107865000002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107865000071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410350 + ... + 619771.

It is an arithmetic number, because the mean of its divisors is an integer number (26966533716).

Almost surely, 2107865000031 is an apocalyptic number.

107865000031 is the 146878-th centered decagonal number.

107865000031 is a deficient number, since it is larger than the sum of its proper divisors (1134833).

107865000031 is a wasteful number, since it uses less digits than its factorization.

107865000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134832.

The product of its (nonzero) digits is 5040, while the sum is 31.

Adding to 107865000031 its reverse (130000568701), we get a palindrome (237865568732).

The spelling of 107865000031 in words is "one hundred seven billion, eight hundred sixty-five million, thirty-one", and thus it is an aban number.

Divisors: 1 104711 1030121 107865000031