31303213002212 has 6 divisors (see below), whose sum is σ = 54780622753878. Its totient is φ = 15651606501104.

The previous prime is 31303213002181. The next prime is 31303213002251. The reversal of 31303213002212 is 21220031230313.

It can be written as a sum of positive squares in only one way, i.e., 27833390341696 + 3469822660516 = 5275736^2 + 1862746^2 .

It is a super-2 number, since 2×31303213002212² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3912901625273 + ... + 3912901625280.

It is an arithmetic number, because the mean of its divisors is an integer number (9130103792313).

Almost surely, 2^{31303213002212} is an apocalyptic number.

It is an amenable number.

31303213002212 is a deficient number, since it is larger than the sum of its proper divisors (23477409751666).

31303213002212 is a wasteful number, since it uses less digits than its factorization.

31303213002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7825803250557 (or 7825803250555 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31303213002212 its reverse (21220031230313), we get a palindrome (52523244232525).

The spelling of 31303213002212 in words is "thirty-one trillion, three hundred three billion, two hundred thirteen million, two thousand, two hundred twelve".