23457170321 has 4 divisors (see below), whose sum is σ = 25261568052. Its totient is φ = 21652772592.

The previous prime is 23457170293. The next prime is 23457170329. The reversal of 23457170321 is 12307175432.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9131713600 + 14325456721 = 95560^2 + 119689^2 .

It is a cyclic number.

It is not a de Polignac number, because 23457170321 - 2¹⁸ = 23456908177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23457170329) 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, 902198846 + ... + 902198871.

It is an arithmetic number, because the mean of its divisors is an integer number (6315392013).

Almost surely, 2^23457170321 is an apocalyptic number.

It is an amenable number.

23457170321 is a deficient number, since it is larger than the sum of its proper divisors (1804397731).

23457170321 is a wasteful number, since it uses less digits than its factorization.

23457170321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804397730.

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 23457170321 in words is "twenty-three billion, four hundred fifty-seven million, one hundred seventy thousand, three hundred twenty-one".