123315411351503 has 32 divisors (see below), whose sum is σ = 149304228387840. Its totient is φ = 99426543966720.

The previous prime is 123315411351499. The next prime is 123315411351511. The reversal of 123315411351503 is 305153114513321.

It is a cyclic number.

It is not a de Polignac number, because 123315411351503 - 2² = 123315411351499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123315411351553) 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, 1657004828 + ... + 1657079246.

It is an arithmetic number, because the mean of its divisors is an integer number (4665757137120).

Almost surely, 2^{123315411351503} is an apocalyptic number.

123315411351503 is a deficient number, since it is larger than the sum of its proper divisors (25988817036337).

123315411351503 is a wasteful number, since it uses less digits than its factorization.

123315411351503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81927.

The product of its (nonzero) digits is 81000, while the sum is 38.

Adding to 123315411351503 its reverse (305153114513321), we get a palindrome (428468525864824).

The spelling of 123315411351503 in words is "one hundred twenty-three trillion, three hundred fifteen billion, four hundred eleven million, three hundred fifty-one thousand, five hundred three".