31030112321013 has 24 divisors (see below), whose sum is σ = 44827813235712. Its totient is φ = 19083970683648.

The previous prime is 31030112320943. The next prime is 31030112321023. The reversal of 31030112321013 is 31012321103013.

It is a happy number.

It is not a de Polignac number, because 31030112321013 - 2¹⁰ = 31030112319989 is a prime.

It is a super-2 number, since 2×31030112321013² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31030112321023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17558356 + ... + 19244637.

It is an arithmetic number, because the mean of its divisors is an integer number (1867825551488).

Almost surely, 2^{31030112321013} is an apocalyptic number.

It is an amenable number.

31030112321013 is a deficient number, since it is larger than the sum of its proper divisors (13797700914699).

31030112321013 is a wasteful number, since it uses less digits than its factorization.

31030112321013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36804685 (or 36804672 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31030112321013 its reverse (31012321103013), we get a palindrome (62042433424026).

The spelling of 31030112321013 in words is "thirty-one trillion, thirty billion, one hundred twelve million, three hundred twenty-one thousand, thirteen".