123202020231 has 6 divisors (see below), whose sum is σ = 177958473680. Its totient is φ = 82134680148.

The previous prime is 123202020229. The next prime is 123202020233. The reversal of 123202020231 is 132020202321.

123202020231 is a `hidden beast` number, since 1 + 232 + 0 + 202 + 0 + 231 = 666.

It is an interprime number because it is at equal distance from previous prime (123202020229) and next prime (123202020233).

It is not a de Polignac number, because 123202020231 - 2¹ = 123202020229 is a prime.

It is a super-2 number, since 2×123202020231² (a number of 23 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 (123202020233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6844556671 + ... + 6844556688.

Almost surely, 2^123202020231 is an apocalyptic number.

123202020231 is a deficient number, since it is larger than the sum of its proper divisors (54756453449).

123202020231 is a wasteful number, since it uses less digits than its factorization.

123202020231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13689113365 (or 13689113362 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 123202020231 its reverse (132020202321), we get a palindrome (255222222552).

It can be divided in two parts, 1 and 23202020231, that added together give a palindrome (23202020232).

The spelling of 123202020231 in words is "one hundred twenty-three billion, two hundred two million, twenty thousand, two hundred thirty-one".