23431356436351 has 4 divisors (see below), whose sum is σ = 23465662961832. Its totient is φ = 23397049910872.

The previous prime is 23431356436253. The next prime is 23431356436391. The reversal of 23431356436351 is 15363465313432.

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 23431356436351 - 2²³ = 23431348047743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23431356436295 and 23431356436304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23431356436391) 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, 17153261716 + ... + 17153263081.

It is an arithmetic number, because the mean of its divisors is an integer number (5866415740458).

Almost surely, 2^{23431356436351} is an apocalyptic number.

23431356436351 is a deficient number, since it is larger than the sum of its proper divisors (34306525481).

23431356436351 is an equidigital number, since it uses as much as digits as its factorization.

23431356436351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34306525480.

The product of its digits is 6998400, while the sum is 49.

The spelling of 23431356436351 in words is "twenty-three trillion, four hundred thirty-one billion, three hundred fifty-six million, four hundred thirty-six thousand, three hundred fifty-one".