123003340405531 has 8 divisors (see below), whose sum is σ = 126979175712128. Its totient is φ = 119028004200000.

The previous prime is 123003340405529. The next prime is 123003340405567. The reversal of 123003340405531 is 135504043300321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123003340405531 - 2¹ = 123003340405529 is a prime.

It is a super-2 number, since 2×123003340405531² (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 (123003340405511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124274370 + ... + 125260231.

It is an arithmetic number, because the mean of its divisors is an integer number (15872396964016).

Almost surely, 2^{123003340405531} is an apocalyptic number.

123003340405531 is a deficient number, since it is larger than the sum of its proper divisors (3975835306597).

123003340405531 is a wasteful number, since it uses less digits than its factorization.

123003340405531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249550533.

The product of its (nonzero) digits is 64800, while the sum is 34.

Adding to 123003340405531 its reverse (135504043300321), we get a palindrome (258507383705852).

The spelling of 123003340405531 in words is "one hundred twenty-three trillion, three billion, three hundred forty million, four hundred five thousand, five hundred thirty-one".