102131004 has 24 divisors (see below), whose sum is σ = 250848640. Its totient is φ = 32251824.

The previous prime is 102130999. The next prime is 102131033. The reversal of 102131004 is 400131201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223744 + ... + 224199.

Almost surely, 2^102131004 is an apocalyptic number.

It is an amenable number.

102131004 is an abundant number, since it is smaller than the sum of its proper divisors (148717636).

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

102131004 is a wasteful number, since it uses less digits than its factorization.

102131004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447969 (or 447967 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 102131004 is about 10105.9885216638. The cubic root of 102131004 is about 467.4328178981.

Adding to 102131004 its reverse (400131201), we get a palindrome (502262205).

The spelling of 102131004 in words is "one hundred two million, one hundred thirty-one thousand, four".