20000131031 has 8 divisors (see below), whose sum is σ = 20028303360. Its totient is φ = 19971981432.

The previous prime is 20000130991. The next prime is 20000131043. The reversal of 20000131031 is 13013100002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20000131031 is a prime.

It is a super-2 number, since 2×20000131031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000131051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2422196 + ... + 2430438.

It is an arithmetic number, because the mean of its divisors is an integer number (2503537920).

Almost surely, 2^20000131031 is an apocalyptic number.

20000131031 is a deficient number, since it is larger than the sum of its proper divisors (28172329).

20000131031 is a wasteful number, since it uses less digits than its factorization.

20000131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11365.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 20000131031 its reverse (13013100002), we get a palindrome (33013231033).

The spelling of 20000131031 in words is "twenty billion, one hundred thirty-one thousand, thirty-one".