31113032312 has 8 divisors (see below), whose sum is σ = 58336935600. Its totient is φ = 15556516152.

The previous prime is 31113032299. The next prime is 31113032369. The reversal of 31113032312 is 21323031113.

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

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, 1944564512 + ... + 1944564527.

It is an arithmetic number, because the mean of its divisors is an integer number (7292116950).

Almost surely, 2^31113032312 is an apocalyptic number.

It is an amenable number.

31113032312 is a deficient number, since it is larger than the sum of its proper divisors (27223903288).

31113032312 is a wasteful number, since it uses less digits than its factorization.

31113032312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3889129045 (or 3889129041 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31113032312 its reverse (21323031113), we get a palindrome (52436063425).

The spelling of 31113032312 in words is "thirty-one billion, one hundred thirteen million, thirty-two thousand, three hundred twelve".