31210001213 has 32 divisors (see below), whose sum is σ = 32912635392. Its totient is φ = 29572480000.

The previous prime is 31210001209. The next prime is 31210001257.

31210001213 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 31210001213 - 2² = 31210001209 is a prime.

It is a super-2 number, since 2×31210001213² (a number of 22 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 (31210001413) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 44521763 + ... + 44522463.

It is an arithmetic number, because the mean of its divisors is an integer number (1028519856).

Almost surely, 2^31210001213 is an apocalyptic number.

It is an amenable number.

31210001213 is a deficient number, since it is larger than the sum of its proper divisors (1702634179).

31210001213 is a wasteful number, since it uses less digits than its factorization.

31210001213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045.

The product of its (nonzero) digits is 36, while the sum is 14.

It can be divided in two parts, 3121000 and 1213, that added together give a palindrome (3122213).

The spelling of 31210001213 in words is "thirty-one billion, two hundred ten million, one thousand, two hundred thirteen".