102131320 has 16 divisors (see below), whose sum is σ = 229795560. Its totient is φ = 40852512.

The previous prime is 102131269. The next prime is 102131347. The reversal of 102131320 is 23131201.

It is a self number, because there is not a number n which added to its sum of digits gives 102131320.

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 3 ways as a sum of consecutive naturals, for example, 1276602 + ... + 1276681.

Almost surely, 2^102131320 is an apocalyptic number.

102131320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102131320 is an abundant number, since it is smaller than the sum of its proper divisors (127664240).

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

102131320 is a wasteful number, since it uses less digits than its factorization.

102131320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553294 (or 2553290 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 102131320 is about 10106.0041559461. The cubic root of 102131320 is about 467.4332999868.

Adding to 102131320 its reverse (23131201), we get a palindrome (125262521).

The spelling of 102131320 in words is "one hundred two million, one hundred thirty-one thousand, three hundred twenty".