31303120301212 has 24 divisors (see below), whose sum is σ = 55946690392320. Its totient is φ = 15318359810160.

The previous prime is 31303120301149. The next prime is 31303120301239. The reversal of 31303120301212 is 21210302130313.

It is a congruent number.

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, 14962839 + ... + 16926097.

It is an arithmetic number, because the mean of its divisors is an integer number (2331112099680).

Almost surely, 2^{31303120301212} is an apocalyptic number.

It is an amenable number.

31303120301212 is a deficient number, since it is larger than the sum of its proper divisors (24643570091108).

31303120301212 is a wasteful number, since it uses less digits than its factorization.

31303120301212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048121 (or 2048119 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31303120301212 its reverse (21210302130313), we get a palindrome (52513422431525).

The spelling of 31303120301212 in words is "thirty-one trillion, three hundred three billion, one hundred twenty million, three hundred one thousand, two hundred twelve".