102131155 has 48 divisors (see below), whose sum is σ = 155612160. Its totient is φ = 62903808.

The previous prime is 102131131. The next prime is 102131177. The reversal of 102131155 is 551131201.

It is not a de Polignac number, because 102131155 - 2²¹ = 100034003 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 232426 + ... + 232864.

It is an arithmetic number, because the mean of its divisors is an integer number (3241920).

Almost surely, 2^102131155 is an apocalyptic number.

102131155 is a deficient number, since it is larger than the sum of its proper divisors (53481005).

102131155 is a wasteful number, since it uses less digits than its factorization.

102131155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 102131155 is about 10105.9959924789. The cubic root of 102131155 is about 467.4330482634.

Adding to 102131155 its reverse (551131201), we get a palindrome (653262356).

The spelling of 102131155 in words is "one hundred two million, one hundred thirty-one thousand, one hundred fifty-five".