20303155131 has 32 divisors (see below), whose sum is σ = 32975059968. Its totient is φ = 10847001600.

The previous prime is 20303155123. The next prime is 20303155177. The reversal of 20303155131 is 13155130302.

It is not a de Polignac number, because 20303155131 - 2³ = 20303155123 is a prime.

It is a super-2 number, since 2×20303155131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20303155111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134410 + ... + 242223.

It is an arithmetic number, because the mean of its divisors is an integer number (1030470624).

Almost surely, 2^20303155131 is an apocalyptic number.

20303155131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20303155131 is a deficient number, since it is larger than the sum of its proper divisors (12671904837).

20303155131 is a wasteful number, since it uses less digits than its factorization.

20303155131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376811.

The product of its (nonzero) digits is 1350, while the sum is 24.

Adding to 20303155131 its reverse (13155130302), we get a palindrome (33458285433).

The spelling of 20303155131 in words is "twenty billion, three hundred three million, one hundred fifty-five thousand, one hundred thirty-one".