212131010031 has 16 divisors (see below), whose sum is σ = 286756387680. Its totient is φ = 139463700480.

The previous prime is 212131009999. The next prime is 212131010033. The reversal of 212131010031 is 130010131212.

It is a happy number.

It is not a de Polignac number, because 212131010031 - 2⁵ = 212131009999 is a prime.

It is a super-2 number, since 2×212131010031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212131010033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1575421 + ... + 1704761.

It is an arithmetic number, because the mean of its divisors is an integer number (17922274230).

Almost surely, 2^212131010031 is an apocalyptic number.

212131010031 is a deficient number, since it is larger than the sum of its proper divisors (74625377649).

212131010031 is a wasteful number, since it uses less digits than its factorization.

212131010031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136906.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 212131010031 its reverse (130010131212), we get a palindrome (342141141243).

The spelling of 212131010031 in words is "two hundred twelve billion, one hundred thirty-one million, ten thousand, thirty-one".