23351 has 4 divisors (see below), whose sum is σ = 24600. Its totient is φ = 22104.

The previous prime is 23339. The next prime is 23357. The reversal of 23351 is 15332.

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 23351 - 2¹⁴ = 6967 is a prime.

It is a super-3 number, since 3×23351³ = 38197743337653, which contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23357) 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, 596 + ... + 633.

It is an arithmetic number, because the mean of its divisors is an integer number (6150).

2²³³⁵¹ is an apocalyptic number.

23351 is a deficient number, since it is larger than the sum of its proper divisors (1249).

23351 is a wasteful number, since it uses less digits than its factorization.

23351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248.

The product of its digits is 90, while the sum is 14.

The square root of 23351 is about 152.8103399643. The cubic root of 23351 is about 28.5826063407.

Adding to 23351 its reverse (15332), we get a palindrome (38683).

The spelling of 23351 in words is "twenty-three thousand, three hundred fifty-one".