123013200532531 has 4 divisors (see below), whose sum is σ = 123013976227192. Its totient is φ = 123012424837872.

The previous prime is 123013200532499. The next prime is 123013200532583. The reversal of 123013200532531 is 135235002310321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123013200532531 - 2⁵ = 123013200532499 is a prime.

It is a super-2 number, since 2×123013200532531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123013200532493 and 123013200532502.

It is not an unprimeable number, because it can be changed into a prime (123013200532591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387609405 + ... + 387926638.

It is an arithmetic number, because the mean of its divisors is an integer number (30753494056798).

Almost surely, 2^{123013200532531} is an apocalyptic number.

123013200532531 is a deficient number, since it is larger than the sum of its proper divisors (775694661).

123013200532531 is an equidigital number, since it uses as much as digits as its factorization.

123013200532531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775694660.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 123013200532531 its reverse (135235002310321), we get a palindrome (258248202842852).

The spelling of 123013200532531 in words is "one hundred twenty-three trillion, thirteen billion, two hundred million, five hundred thirty-two thousand, five hundred thirty-one".