23420431172613 has 8 divisors (see below), whose sum is σ = 31739163556576. Its totient is φ = 15357659785200.

The previous prime is 23420431172609. The next prime is 23420431172647. The reversal of 23420431172613 is 31627113402432.

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

It is not a de Polignac number, because 23420431172613 - 2² = 23420431172609 is a prime.

It is a super-2 number, since 2×23420431172613² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23420431172713) 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, 63990248923 + ... + 63990249288.

It is an arithmetic number, because the mean of its divisors is an integer number (3967395444572).

Almost surely, 2^{23420431172613} is an apocalyptic number.

It is an amenable number.

23420431172613 is a deficient number, since it is larger than the sum of its proper divisors (8318732383963).

23420431172613 is a wasteful number, since it uses less digits than its factorization.

23420431172613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127980498275.

The product of its (nonzero) digits is 145152, while the sum is 39.

The spelling of 23420431172613 in words is "twenty-three trillion, four hundred twenty billion, four hundred thirty-one million, one hundred seventy-two thousand, six hundred thirteen".