31231132233012 has 36 divisors (see below), whose sum is σ = 78946073571456. Its totient is φ = 10410283581840.

The previous prime is 31231132232941. The next prime is 31231132233031. The reversal of 31231132233012 is 21033223113213.

31231132233012 is a `hidden beast` number, since 3 + 1 + 2 + 3 + 1 + 1 + 322 + 330 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×31231132233012² (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 11 ways as a sum of consecutive naturals, for example, 199293 + ... + 7905819.

It is an arithmetic number, because the mean of its divisors is an integer number (2192946488096).

Almost surely, 2^{31231132233012} is an apocalyptic number.

It is an amenable number.

31231132233012 is an abundant number, since it is smaller than the sum of its proper divisors (47714941338444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31231132233012 is a wasteful number, since it uses less digits than its factorization.

31231132233012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7819108 (or 7819103 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 31231132233012 its reverse (21033223113213), we get a palindrome (52264355346225).

The spelling of 31231132233012 in words is "thirty-one trillion, two hundred thirty-one billion, one hundred thirty-two million, two hundred thirty-three thousand, twelve".