102320112431 has 16 divisors (see below), whose sum is σ = 113122254240. Its totient is φ = 92111523840.

The previous prime is 102320112409. The next prime is 102320112469. The reversal of 102320112431 is 134211023201.

It is a cyclic number.

It is not a de Polignac number, because 102320112431 - 2²² = 102315918127 is a prime.

It is a super-4 number, since 4×102320112431⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102320112931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 917090 + ... + 1022591.

It is an arithmetic number, because the mean of its divisors is an integer number (7070140890).

Almost surely, 2^102320112431 is an apocalyptic number.

102320112431 is a deficient number, since it is larger than the sum of its proper divisors (10802141809).

102320112431 is a wasteful number, since it uses less digits than its factorization.

102320112431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939834.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 102320112431 its reverse (134211023201), we get a palindrome (236531135632).

The spelling of 102320112431 in words is "one hundred two billion, three hundred twenty million, one hundred twelve thousand, four hundred thirty-one".