31032130031 has 4 divisors (see below), whose sum is σ = 35465291472. Its totient is φ = 26598968592.

The previous prime is 31032130027. The next prime is 31032130033. The reversal of 31032130031 is 13003123013.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 31032130031 - 2² = 31032130027 is a prime.

It is a super-2 number, since 2×31032130031² (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 = 31032129991 and 31032130009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31032130033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2216580710 + ... + 2216580723.

It is an arithmetic number, because the mean of its divisors is an integer number (8866322868).

Almost surely, 2^31032130031 is an apocalyptic number.

31032130031 is a deficient number, since it is larger than the sum of its proper divisors (4433161441).

31032130031 is an equidigital number, since it uses as much as digits as its factorization.

31032130031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433161440.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 31032130031 its reverse (13003123013), we get a palindrome (44035253044).

The spelling of 31032130031 in words is "thirty-one billion, thirty-two million, one hundred thirty thousand, thirty-one".