202102131 has 32 divisors (see below), whose sum is σ = 347558400. Its totient is φ = 101364480.

The previous prime is 202102123. The next prime is 202102141. The reversal of 202102131 is 131201202.

It is not a de Polignac number, because 202102131 - 2³ = 202102123 is a prime.

It is a super-2 number, since 2×202102131² = 81690542709482322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (202102141) 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, 8386 + ... + 21783.

It is an arithmetic number, because the mean of its divisors is an integer number (10861200).

Almost surely, 2^202102131 is an apocalyptic number.

202102131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

202102131 is a deficient number, since it is larger than the sum of its proper divisors (145456269).

202102131 is a wasteful number, since it uses less digits than its factorization.

202102131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30219.

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

The square root of 202102131 is about 14216.2629055600. The cubic root of 202102131 is about 586.8453003215.

Adding to 202102131 its reverse (131201202), we get a palindrome (333303333).

The spelling of 202102131 in words is "two hundred two million, one hundred two thousand, one hundred thirty-one".