203131120131 has 12 divisors (see below), whose sum is σ = 293428660200. Its totient is φ = 135412881120.

The previous prime is 203131120103. The next prime is 203131120139. The reversal of 203131120131 is 131021131302.

203131120131 is a `hidden beast` number, since 203 + 1 + 311 + 20 + 131 = 666.

It is not a de Polignac number, because 203131120131 - 2⁹ = 203131119619 is a prime.

It is a super-2 number, since 2×203131120131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203131120139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 489705 + ... + 803786.

It is an arithmetic number, because the mean of its divisors is an integer number (24452388350).

Almost surely, 2^203131120131 is an apocalyptic number.

203131120131 is a deficient number, since it is larger than the sum of its proper divisors (90297540069).

203131120131 is a wasteful number, since it uses less digits than its factorization.

203131120131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310946 (or 1310943 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 203131120131 its reverse (131021131302), we get a palindrome (334152251433).

The spelling of 203131120131 in words is "two hundred three billion, one hundred thirty-one million, one hundred twenty thousand, one hundred thirty-one".