202156131 has 16 divisors (see below), whose sum is σ = 282078720. Its totient is φ = 128536320.

The previous prime is 202156121. The next prime is 202156139. The reversal of 202156131 is 131651202.

It is not a de Polignac number, because 202156131 - 2²⁶ = 135047267 is a prime.

It is a super-2 number, since 2×202156131² = 81734202601778322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202156098 and 202156107.

It is not an unprimeable number, because it can be changed into a prime (202156139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20691 + ... + 28851.

It is an arithmetic number, because the mean of its divisors is an integer number (17629920).

Almost surely, 2^202156131 is an apocalyptic number.

202156131 is a deficient number, since it is larger than the sum of its proper divisors (79922589).

202156131 is a wasteful number, since it uses less digits than its factorization.

202156131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8546.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 202156131 is about 14218.1620120183. The cubic root of 202156131 is about 586.8975623867.

The spelling of 202156131 in words is "two hundred two million, one hundred fifty-six thousand, one hundred thirty-one".