23540351 has 4 divisors (see below), whose sum is σ = 23939400. Its totient is φ = 23141304.

The previous prime is 23540347. The next prime is 23540357. The reversal of 23540351 is 15304532.

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 23540351 - 2² = 23540347 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 (23540357) 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, 199436 + ... + 199553.

It is an arithmetic number, because the mean of its divisors is an integer number (5984850).

Almost surely, 2^23540351 is an apocalyptic number.

23540351 is a deficient number, since it is larger than the sum of its proper divisors (399049).

23540351 is an equidigital number, since it uses as much as digits as its factorization.

23540351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399048.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 23540351 is about 4851.8399602625. The cubic root of 23540351 is about 286.5965631414.

Adding to 23540351 its reverse (15304532), we get a palindrome (38844883).

The spelling of 23540351 in words is "twenty-three million, five hundred forty thousand, three hundred fifty-one".