31232213000312 has 8 divisors (see below), whose sum is σ = 58560399375600. Its totient is φ = 15616106500152.

The previous prime is 31232213000281. The next prime is 31232213000327. The reversal of 31232213000312 is 21300031223213.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×31232213000312² (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 as a sum of consecutive naturals, namely, 1952013312512 + ... + 1952013312527.

It is an arithmetic number, because the mean of its divisors is an integer number (7320049921950).

Almost surely, 2^{31232213000312} is an apocalyptic number.

It is an amenable number.

31232213000312 is a deficient number, since it is larger than the sum of its proper divisors (27328186375288).

31232213000312 is a wasteful number, since it uses less digits than its factorization.

31232213000312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3904026625045 (or 3904026625041 counting only the distinct ones).

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

Adding to 31232213000312 its reverse (21300031223213), we get a palindrome (52532244223525).

The spelling of 31232213000312 in words is "thirty-one trillion, two hundred thirty-two billion, two hundred thirteen million, three hundred twelve", and thus it is an aban number.