31222213010 has 16 divisors (see below), whose sum is σ = 56697330456. Its totient is φ = 12378363648.

The previous prime is 31222212979. The next prime is 31222213021. The reversal of 31222213010 is 1031222213.

It can be written as a sum of positive squares in 4 ways, for example, as 14715873481 + 16506339529 = 121309^2 + 128477^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31222213010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13814009 + ... + 13816268.

Almost surely, 2^31222213010 is an apocalyptic number.

31222213010 is a deficient number, since it is larger than the sum of its proper divisors (25475117446).

31222213010 is a wasteful number, since it uses less digits than its factorization.

31222213010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27630397.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31222213010 its reverse (1031222213), we get a palindrome (32253435223).

The spelling of 31222213010 in words is "thirty-one billion, two hundred twenty-two million, two hundred thirteen thousand, ten".