31103213210 has 16 divisors (see below), whose sum is σ = 56068984296. Its totient is φ = 12422796288.

The previous prime is 31103213203. The next prime is 31103213227. The reversal of 31103213210 is 1231230113.

It can be written as a sum of positive squares in 4 ways, for example, as 16540274881 + 14562938329 = 128609^2 + 120677^2 .

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, 2304059 + ... + 2317518.

Almost surely, 2^31103213210 is an apocalyptic number.

31103213210 is a deficient number, since it is larger than the sum of its proper divisors (24965771086).

31103213210 is a wasteful number, since it uses less digits than its factorization.

31103213210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4622257.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31103213210 its reverse (1231230113), we get a palindrome (32334443323).

The spelling of 31103213210 in words is "thirty-one billion, one hundred three million, two hundred thirteen thousand, two hundred ten".