230021020131 has 32 divisors (see below), whose sum is σ = 374952453120. Its totient is φ = 122433417216.

The previous prime is 230021020129. The next prime is 230021020171. The reversal of 230021020131 is 131020120032.

It is not a de Polignac number, because 230021020131 - 2¹ = 230021020129 is a prime.

It is a super-2 number, since 2×230021020131² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 230021020131.

It is not an unprimeable number, because it can be changed into a prime (230021020171) 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, 3286591 + ... + 3355848.

It is an arithmetic number, because the mean of its divisors is an integer number (11717264160).

Almost surely, 2^230021020131 is an apocalyptic number.

230021020131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

230021020131 is a deficient number, since it is larger than the sum of its proper divisors (144931432989).

230021020131 is a wasteful number, since it uses less digits than its factorization.

230021020131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6642563.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 230021020131 its reverse (131020120032), we get a palindrome (361041140163).

Subtracting from 230021020131 its reverse (131020120032), we obtain a palindrome (99000900099).

The spelling of 230021020131 in words is "two hundred thirty billion, twenty-one million, twenty thousand, one hundred thirty-one".