102931055 has 4 divisors (see below), whose sum is σ = 123517272. Its totient is φ = 82344840.

The previous prime is 102931051. The next prime is 102931057. The reversal of 102931055 is 550139201.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 102931055 - 2² = 102931051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102931051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10293101 + ... + 10293110.

It is an arithmetic number, because the mean of its divisors is an integer number (30879318).

Almost surely, 2^102931055 is an apocalyptic number.

102931055 is a deficient number, since it is larger than the sum of its proper divisors (20586217).

102931055 is an equidigital number, since it uses as much as digits as its factorization.

102931055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20586216.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 102931055 is about 10145.4943201403. The cubic root of 102931055 is about 468.6502014503.

The spelling of 102931055 in words is "one hundred two million, nine hundred thirty-one thousand, fifty-five".