102431112990 has 64 divisors (see below), whose sum is σ = 259028755200. Its totient is φ = 25851792384.

The previous prime is 102431112961. The next prime is 102431112991. The reversal of 102431112990 is 99211134201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102431112991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 492654 + ... + 669006.

It is an arithmetic number, because the mean of its divisors is an integer number (4047324300).

Almost surely, 2^102431112990 is an apocalyptic number.

102431112990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102431112990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129514377600).

102431112990 is an abundant number, since it is smaller than the sum of its proper divisors (156597642210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102431112990 is a wasteful number, since it uses less digits than its factorization.

102431112990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177401.

The product of its (nonzero) digits is 3888, while the sum is 33.

It can be divided in two parts, 1024311 and 12990, that added together give a palindrome (1037301).

The spelling of 102431112990 in words is "one hundred two billion, four hundred thirty-one million, one hundred twelve thousand, nine hundred ninety".