23901309 has 6 divisors (see below), whose sum is σ = 34524126. Its totient is φ = 15934200.

The previous prime is 23901299. The next prime is 23901359. The reversal of 23901309 is 90310932.

It can be written as a sum of positive squares in only one way, i.e., 19554084 + 4347225 = 4422^2 + 2085^2 .

It is not a de Polignac number, because 23901309 - 2⁹ = 23900797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23901359) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1327842 + ... + 1327859.

It is an arithmetic number, because the mean of its divisors is an integer number (5754021).

Almost surely, 2^23901309 is an apocalyptic number.

It is an amenable number.

23901309 is a deficient number, since it is larger than the sum of its proper divisors (10622817).

23901309 is a wasteful number, since it uses less digits than its factorization.

23901309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655707 (or 2655704 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 23901309 is about 4888.8965012567. The cubic root of 23901309 is about 288.0539901674.

The spelling of 23901309 in words is "twenty-three million, nine hundred one thousand, three hundred nine".