31010212121212 has 6 divisors (see below), whose sum is σ = 54267871212128. Its totient is φ = 15505106060604.

The previous prime is 31010212121123. The next prime is 31010212121219. The reversal of 31010212121212 is 21212121201013.

It is a self number, because there is not a number n which added to its sum of digits gives 31010212121212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31010212121219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3876276515148 + ... + 3876276515155.

Almost surely, 2^{31010212121212} is an apocalyptic number.

It is an amenable number.

31010212121212 is a deficient number, since it is larger than the sum of its proper divisors (23257659090916).

31010212121212 is a wasteful number, since it uses less digits than its factorization.

31010212121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7752553030307 (or 7752553030305 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 31010212121212 its reverse (21212121201013), we get a palindrome (52222333322225).

The spelling of 31010212121212 in words is "thirty-one trillion, ten billion, two hundred twelve million, one hundred twenty-one thousand, two hundred twelve".