31012020031030 has 64 divisors (see below), whose sum is σ = 58421852380800. Its totient is φ = 11837109222400.

The previous prime is 31012020031019. The next prime is 31012020031033. The reversal of 31012020031030 is 3013002021013.

It is a junction number, because it is equal to n+sod(n) for n = 31012020030995 and 31012020031013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012020031033) 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 31 ways as a sum of consecutive naturals, for example, 56846055 + ... + 57389005.

It is an arithmetic number, because the mean of its divisors is an integer number (912841443450).

Almost surely, 2^{31012020031030} is an apocalyptic number.

31012020031030 is a deficient number, since it is larger than the sum of its proper divisors (27409832349770).

31012020031030 is a wasteful number, since it uses less digits than its factorization.

31012020031030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545289.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31012020031030 its reverse (3013002021013), we get a palindrome (34025022052043).

The spelling of 31012020031030 in words is "thirty-one trillion, twelve billion, twenty million, thirty-one thousand, thirty".