220031003131 has 4 divisors (see below), whose sum is σ = 220038946000. Its totient is φ = 220023060264.

The previous prime is 220031003113. The next prime is 220031003177. The reversal of 220031003131 is 131300130022.

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

It is a cyclic number.

It is not a de Polignac number, because 220031003131 - 2²³ = 220022614523 is a prime.

It is a super-2 number, since 2×220031003131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220031043131) 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, 3929736 + ... + 3985333.

It is an arithmetic number, because the mean of its divisors is an integer number (55009736500).

Almost surely, 2^220031003131 is an apocalyptic number.

220031003131 is a deficient number, since it is larger than the sum of its proper divisors (7942869).

220031003131 is an equidigital number, since it uses as much as digits as its factorization.

220031003131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7942868.

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

Adding to 220031003131 its reverse (131300130022), we get a palindrome (351331133153).

The spelling of 220031003131 in words is "two hundred twenty billion, thirty-one million, three thousand, one hundred thirty-one".