31301223013012 has 24 divisors (see below), whose sum is σ = 57033056103912. Its totient is φ = 15018579609600.

The previous prime is 31301223013007. The next prime is 31301223013037. The reversal of 31301223013012 is 21031032210313.

It can be written as a sum of positive squares in 4 ways, for example, as 161207068036 + 31140015944976 = 401506^2 + 5580324^2 .

It is a super-2 number, since 2×31301223013012² (a number of 28 digits) contains 22 as substring.

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, 1564425373 + ... + 1564445380.

It is an arithmetic number, because the mean of its divisors is an integer number (2376377337663).

Almost surely, 2^{31301223013012} is an apocalyptic number.

It is an amenable number.

31301223013012 is a deficient number, since it is larger than the sum of its proper divisors (25731833090900).

31301223013012 is a wasteful number, since it uses less digits than its factorization.

31301223013012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128870859 (or 3128870857 counting only the distinct ones).

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

Adding to 31301223013012 its reverse (21031032210313), we get a palindrome (52332255223325).

The spelling of 31301223013012 in words is "thirty-one trillion, three hundred one billion, two hundred twenty-three million, thirteen thousand, twelve".