23385961 has 4 divisors (see below), whose sum is σ = 24018052. Its totient is φ = 22753872.

The previous prime is 23385953. The next prime is 23385983. The reversal of 23385961 is 16958332.

23385961 = 3419² + 3420².

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 11696400 + 11689561 = 3420^2 + 3419^2 .

It is a cyclic number.

It is not a de Polignac number, because 23385961 - 2³ = 23385953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 632053 = 23385961 / (2 + 3 + 3 + 8 + 5 + 9 + 6 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23385961.

It is not an unprimeable number, because it can be changed into a prime (23385161) 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, 315990 + ... + 316063.

It is an arithmetic number, because the mean of its divisors is an integer number (6004513).

Almost surely, 2^23385961 is an apocalyptic number.

23385961 is the 3420-th centered square number.

It is an amenable number.

23385961 is a deficient number, since it is larger than the sum of its proper divisors (632091).

23385961 is an equidigital number, since it uses as much as digits as its factorization.

23385961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632090.

The product of its digits is 38880, while the sum is 37.

The square root of 23385961 is about 4835.9033282314. The cubic root of 23385961 is about 285.9686380594.

The spelling of 23385961 in words is "twenty-three million, three hundred eighty-five thousand, nine hundred sixty-one".