23351261 has 4 divisors (see below), whose sum is σ = 23680224. Its totient is φ = 23022300.

The previous prime is 23351249. The next prime is 23351267. The reversal of 23351261 is 16215332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23351261 - 2¹⁸ = 23089117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23351267) 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, 164375 + ... + 164516.

It is an arithmetic number, because the mean of its divisors is an integer number (5920056).

Almost surely, 2^23351261 is an apocalyptic number.

It is an amenable number.

23351261 is a deficient number, since it is larger than the sum of its proper divisors (328963).

23351261 is an equidigital number, since it uses as much as digits as its factorization.

23351261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328962.

The product of its digits is 1080, while the sum is 23.

The square root of 23351261 is about 4832.3142488874. The cubic root of 23351261 is about 285.8271283199.

Adding to 23351261 its reverse (16215332), we get a palindrome (39566593).

The spelling of 23351261 in words is "twenty-three million, three hundred fifty-one thousand, two hundred sixty-one".