123013204431 has 16 divisors (see below), whose sum is σ = 177168001920. Its totient is φ = 75471723360.

The previous prime is 123013204417. The next prime is 123013204469. The reversal of 123013204431 is 134402310321.

It is a happy number.

It is not a de Polignac number, because 123013204431 - 2¹⁴ = 123013188047 is a prime.

It is a super-2 number, since 2×123013204431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123013204031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4751721 + ... + 4777538.

It is an arithmetic number, because the mean of its divisors is an integer number (11073000120).

Almost surely, 2^123013204431 is an apocalyptic number.

123013204431 is a deficient number, since it is larger than the sum of its proper divisors (54154797489).

123013204431 is a wasteful number, since it uses less digits than its factorization.

123013204431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9529606.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 123013204431 its reverse (134402310321), we get a palindrome (257415514752).

The spelling of 123013204431 in words is "one hundred twenty-three billion, thirteen million, two hundred four thousand, four hundred thirty-one".