31033231130312 has 32 divisors (see below), whose sum is σ = 61649408862720. Its totient is φ = 14594553734400.

The previous prime is 31033231130311. The next prime is 31033231130347. The reversal of 31033231130312 is 21303113233013.

It is a super-2 number, since 2×31033231130312² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31033231130311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72596564 + ... + 73022787.

It is an arithmetic number, because the mean of its divisors is an integer number (1926544026960).

Almost surely, 2^{31033231130312} is an apocalyptic number.

It is an amenable number.

31033231130312 is a deficient number, since it is larger than the sum of its proper divisors (30616177732408).

31033231130312 is a wasteful number, since it uses less digits than its factorization.

31033231130312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145620941 (or 145620937 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 31033231130312 its reverse (21303113233013), we get a palindrome (52336344363325).

The spelling of 31033231130312 in words is "thirty-one trillion, thirty-three billion, two hundred thirty-one million, one hundred thirty thousand, three hundred twelve".