202130031 has 4 divisors (see below), whose sum is σ = 269506712. Its totient is φ = 134753352.

The previous prime is 202130023. The next prime is 202130039. The reversal of 202130031 is 130031202.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (202130023) and next prime (202130039).

It is not a de Polignac number, because 202130031 - 2³ = 202130023 is a prime.

It is a super-2 number, since 2×202130031² = 81713098864121922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202129989 and 202130016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202130039) 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, 33688336 + ... + 33688341.

It is an arithmetic number, because the mean of its divisors is an integer number (67376678).

Almost surely, 2^202130031 is an apocalyptic number.

202130031 is a deficient number, since it is larger than the sum of its proper divisors (67376681).

202130031 is an equidigital number, since it uses as much as digits as its factorization.

202130031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67376680.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 202130031 is about 14217.2441422380. The cubic root of 202130031 is about 586.8723035508.

Adding to 202130031 its reverse (130031202), we get a palindrome (332161233).

It can be divided in two parts, 202 and 130031, that multiplied together give a palindrome (26266262).

The spelling of 202130031 in words is "two hundred two million, one hundred thirty thousand, thirty-one".