212497310831 has 8 divisors (see below), whose sum is σ = 235028211264. Its totient is φ = 190849975200.

The previous prime is 212497310827. The next prime is 212497310843. The reversal of 212497310831 is 138013794212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212497310831 - 2² = 212497310827 is a prime.

It is a super-2 number, since 2×212497310831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212491310831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220890695 + ... + 220891656.

It is an arithmetic number, because the mean of its divisors is an integer number (29378526408).

Almost surely, 2^212497310831 is an apocalyptic number.

212497310831 is a deficient number, since it is larger than the sum of its proper divisors (22530900433).

212497310831 is a wasteful number, since it uses less digits than its factorization.

212497310831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441782401.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 212497310831 in words is "two hundred twelve billion, four hundred ninety-seven million, three hundred ten thousand, eight hundred thirty-one".