123012313353529 has 4 divisors (see below), whose sum is σ = 124569431244160. Its totient is φ = 121455195462900.

The previous prime is 123012313353499. The next prime is 123012313353563. The reversal of 123012313353529 is 925353313210321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123012313353529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123012313353599) 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, 778558945197 + ... + 778558945354.

It is an arithmetic number, because the mean of its divisors is an integer number (31142357811040).

Almost surely, 2^{123012313353529} is an apocalyptic number.

It is an amenable number.

123012313353529 is a deficient number, since it is larger than the sum of its proper divisors (1557117890631).

123012313353529 is an equidigital number, since it uses as much as digits as its factorization.

123012313353529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557117890630.

The product of its (nonzero) digits is 437400, while the sum is 43.

The spelling of 123012313353529 in words is "one hundred twenty-three trillion, twelve billion, three hundred thirteen million, three hundred fifty-three thousand, five hundred twenty-nine".