23251013 has 4 divisors (see below), whose sum is σ = 23264268. Its totient is φ = 23237760.

The previous prime is 23251001. The next prime is 23251021. The reversal of 23251013 is 31015232.

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 9840769 + 13410244 = 3137^2 + 3662^2 .

It is a cyclic number.

It is not a de Polignac number, because 23251013 - 2⁶ = 23250949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23250982 and 23251000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23251073) 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, 3506 + ... + 7667.

It is an arithmetic number, because the mean of its divisors is an integer number (5816067).

Almost surely, 2^23251013 is an apocalyptic number.

It is an amenable number.

23251013 is a deficient number, since it is larger than the sum of its proper divisors (13255).

23251013 is a wasteful number, since it uses less digits than its factorization.

23251013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13254.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 23251013 is about 4821.9304225590. The cubic root of 23251013 is about 285.4175187524.

Adding to 23251013 its reverse (31015232), we get a palindrome (54266245).

The spelling of 23251013 in words is "twenty-three million, two hundred fifty-one thousand, thirteen".