123012351444431 has 4 divisors (see below), whose sum is σ = 129486685731000. Its totient is φ = 116538017157864.

The previous prime is 123012351444427. The next prime is 123012351444461. The reversal of 123012351444431 is 134444153210321.

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 123012351444431 - 2² = 123012351444427 is a prime.

It is a super-2 number, since 2×123012351444431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123012351444461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3237167143256 + ... + 3237167143293.

It is an arithmetic number, because the mean of its divisors is an integer number (32371671432750).

Almost surely, 2^{123012351444431} is an apocalyptic number.

123012351444431 is a deficient number, since it is larger than the sum of its proper divisors (6474334286569).

123012351444431 is an equidigital number, since it uses as much as digits as its factorization.

123012351444431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6474334286568.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 123012351444431 in words is "one hundred twenty-three trillion, twelve billion, three hundred fifty-one million, four hundred forty-four thousand, four hundred thirty-one".