31211402002 has 32 divisors (see below), whose sum is σ = 51766490880. Its totient is φ = 13994747520.

The previous prime is 31211401997. The next prime is 31211402099. The reversal of 31211402002 is 20020411213.

It is a super-2 number, since 2×31211402002² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2065908 + ... + 2080960.

It is an arithmetic number, because the mean of its divisors is an integer number (1617702840).

Almost surely, 2^31211402002 is an apocalyptic number.

31211402002 is a deficient number, since it is larger than the sum of its proper divisors (20555088878).

31211402002 is a wasteful number, since it uses less digits than its factorization.

31211402002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16338.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 31211402002 its reverse (20020411213), we get a palindrome (51231813215).

The spelling of 31211402002 in words is "thirty-one billion, two hundred eleven million, four hundred two thousand, two".