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102231121 = 313326617
BaseRepresentation
bin1100001011111…
…10110001010001
321010100212201211
412011332301101
5202132343441
614051100121
72350643626
oct605766121
9233325654
10102231121
1152785833
122a2a1641
13182451b5
14d81234d
158e95a81
hex617ec51

102231121 has 4 divisors (see below), whose sum is σ = 102558052. Its totient is φ = 101904192.

The previous prime is 102231109. The next prime is 102231127. The reversal of 102231121 is 121132201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50908225 + 51322896 = 7135^2 + 7164^2 .

It is a cyclic number.

It is not a de Polignac number, because 102231121 - 211 = 102229073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102231127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162996 + ... + 163621.

It is an arithmetic number, because the mean of its divisors is an integer number (25639513).

Almost surely, 2102231121 is an apocalyptic number.

It is an amenable number.

102231121 is a deficient number, since it is larger than the sum of its proper divisors (326931).

102231121 is an equidigital number, since it uses as much as digits as its factorization.

102231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326930.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 102231121 is about 10110.9406585144. The cubic root of 102231121 is about 467.5855063936.

Adding to 102231121 its reverse (121132201), we get a palindrome (223363322).

The spelling of 102231121 in words is "one hundred two million, two hundred thirty-one thousand, one hundred twenty-one".

Divisors: 1 313 326617 102231121