31011241312 has 24 divisors (see below), whose sum is σ = 61116579216. Its totient is φ = 15489570432.

The previous prime is 31011241301. The next prime is 31011241319. The reversal of 31011241312 is 21314211013.

It is a super-2 number, since 2×31011241312² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31011241312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31011241319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470143 + ... + 532030.

It is an arithmetic number, because the mean of its divisors is an integer number (2546524134).

Almost surely, 2^31011241312 is an apocalyptic number.

31011241312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31011241312 is a deficient number, since it is larger than the sum of its proper divisors (30105337904).

31011241312 is a wasteful number, since it uses less digits than its factorization.

31011241312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003150 (or 1003142 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31011241312 its reverse (21314211013), we get a palindrome (52325452325).

The spelling of 31011241312 in words is "thirty-one billion, eleven million, two hundred forty-one thousand, three hundred twelve".