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2103102031 = 31463146527
BaseRepresentation
bin111110101011010…
…1100101001001111
312102120100122121211
41331112230221033
513301343231111
6544404435251
7103055033542
oct17526545117
95376318554
102103102031
1198a167758
124a83a8b27
13276935a94
1415d456859
15c497b521
hex7d5aca4f

2103102031 has 8 divisors (see below), whose sum is σ = 2175647744. Its totient is φ = 2030850360.

The previous prime is 2103102019. The next prime is 2103102103. The reversal of 2103102031 is 1302013012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2103102031 - 211 = 2103099983 is a prime.

It is a super-2 number, since 2×21031020312 = 8846076305592649922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103102931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58911 + ... + 87616.

It is an arithmetic number, because the mean of its divisors is an integer number (271955968).

Almost surely, 22103102031 is an apocalyptic number.

2103102031 is a deficient number, since it is larger than the sum of its proper divisors (72545713).

2103102031 is a wasteful number, since it uses less digits than its factorization.

2103102031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147021.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2103102031 is about 45859.5903928502. The cubic root of 2103102031 is about 1281.2093938636.

Adding to 2103102031 its reverse (1302013012), we get a palindrome (3405115043).

The spelling of 2103102031 in words is "two billion, one hundred three million, one hundred two thousand, thirty-one".

Divisors: 1 31 463 14353 146527 4542337 67842001 2103102031