31020130031 has 6 divisors (see below), whose sum is σ = 34096506696. Its totient is φ = 28200118100.

The previous prime is 31020130019. The next prime is 31020130051. The reversal of 31020130031 is 13003102013.

It is not a de Polignac number, because 31020130031 - 2³⁰ = 29946388207 is a prime.

It is a super-2 number, since 2×31020130031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31020129988 and 31020130015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020130051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128182235 + ... + 128182476.

It is an arithmetic number, because the mean of its divisors is an integer number (5682751116).

Almost surely, 2^31020130031 is an apocalyptic number.

31020130031 is a deficient number, since it is larger than the sum of its proper divisors (3076376665).

31020130031 is a wasteful number, since it uses less digits than its factorization.

31020130031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256364733 (or 256364722 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 31020130031 its reverse (13003102013), we get a palindrome (44023232044).

It can be divided in two parts, 31020 and 130031, that added together give a 5-th power (161051 = 11⁵).

The spelling of 31020130031 in words is "thirty-one billion, twenty million, one hundred thirty thousand, thirty-one".