102131231235 has 32 divisors (see below), whose sum is σ = 178310999808. Its totient is φ = 49505512320.

The previous prime is 102131231233. The next prime is 102131231311. The reversal of 102131231235 is 532132131201.

It is a happy number.

It is not a de Polignac number, because 102131231235 - 2¹ = 102131231233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102131231233) 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, 585024 + ... + 739266.

It is an arithmetic number, because the mean of its divisors is an integer number (5572218744).

Almost surely, 2^102131231235 is an apocalyptic number.

102131231235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102131231235 is a deficient number, since it is larger than the sum of its proper divisors (76179768573).

102131231235 is a wasteful number, since it uses less digits than its factorization.

102131231235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158275.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 102131231235 its reverse (532132131201), we get a palindrome (634263362436).

The spelling of 102131231235 in words is "one hundred two billion, one hundred thirty-one million, two hundred thirty-one thousand, two hundred thirty-five".