210031412644 has 12 divisors (see below), whose sum is σ = 386899970800. Its totient is φ = 99488563848.

The previous prime is 210031412639. The next prime is 210031412653. The reversal of 210031412644 is 446214130012.

It is a super-2 number, since 2×210031412644² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1381785534 + ... + 1381785685.

Almost surely, 2^210031412644 is an apocalyptic number.

It is an amenable number.

210031412644 is a deficient number, since it is larger than the sum of its proper divisors (176868558156).

210031412644 is a wasteful number, since it uses less digits than its factorization.

210031412644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763571242 (or 2763571240 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 210031412644 its reverse (446214130012), we get a palindrome (656245542656).

The spelling of 210031412644 in words is "two hundred ten billion, thirty-one million, four hundred twelve thousand, six hundred forty-four".