123031103224405 has 16 divisors (see below), whose sum is σ = 148403395301040. Its totient is φ = 97914175930368.

The previous prime is 123031103224391. The next prime is 123031103224429. The reversal of 123031103224405 is 504422301130321.

It can be written as a sum of positive squares in 8 ways, for example, as 6689661527844 + 116341441696561 = 2586438^2 + 10786169^2 .

It is a cyclic number.

It is not a de Polignac number, because 123031103224405 - 2¹³ = 123031103216213 is a prime.

It is a super-2 number, since 2×123031103224405² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154536601 + ... + 155330689.

It is an arithmetic number, because the mean of its divisors is an integer number (9275212206315).

Almost surely, 2^{123031103224405} is an apocalyptic number.

It is an amenable number.

123031103224405 is a deficient number, since it is larger than the sum of its proper divisors (25372292076635).

123031103224405 is a wasteful number, since it uses less digits than its factorization.

123031103224405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954840.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 123031103224405 its reverse (504422301130321), we get a palindrome (627453404354726).

The spelling of 123031103224405 in words is "one hundred twenty-three trillion, thirty-one billion, one hundred three million, two hundred twenty-four thousand, four hundred five".