102112431 has 8 divisors (see below), whose sum is σ = 136277760. Its totient is φ = 68011032.

The previous prime is 102112429. The next prime is 102112447. The reversal of 102112431 is 134211201.

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

It is not a de Polignac number, because 102112431 - 2¹ = 102112429 is a prime.

It is a super-2 number, since 2×102112431² = 20853897129459522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102112431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102112471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12121 + ... + 18738.

It is an arithmetic number, because the mean of its divisors is an integer number (17034720).

Almost surely, 2^102112431 is an apocalyptic number.

102112431 is a deficient number, since it is larger than the sum of its proper divisors (34165329).

102112431 is a wasteful number, since it uses less digits than its factorization.

102112431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31965.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 102112431 is about 10105.0695692806. The cubic root of 102112431 is about 467.4044812334.

Adding to 102112431 its reverse (134211201), we get a palindrome (236323632).

The spelling of 102112431 in words is "one hundred two million, one hundred twelve thousand, four hundred thirty-one".