123103225352531 has 4 divisors (see below), whose sum is σ = 123424643695872. Its totient is φ = 122781807009192.

The previous prime is 123103225352509. The next prime is 123103225352629. The reversal of 123103225352531 is 135253522301321.

It is a happy number.

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 123103225352531 - 2⁶ = 123103225352467 is a prime.

It is a super-2 number, since 2×123103225352531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123103225352231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160709171096 + ... + 160709171861.

It is an arithmetic number, because the mean of its divisors is an integer number (30856160923968).

Almost surely, 2^{123103225352531} is an apocalyptic number.

123103225352531 is a deficient number, since it is larger than the sum of its proper divisors (321418343341).

123103225352531 is an equidigital number, since it uses as much as digits as its factorization.

123103225352531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321418343340.

The product of its (nonzero) digits is 162000, while the sum is 38.

Adding to 123103225352531 its reverse (135253522301321), we get a palindrome (258356747653852).

The spelling of 123103225352531 in words is "one hundred twenty-three trillion, one hundred three billion, two hundred twenty-five million, three hundred fifty-two thousand, five hundred thirty-one".