23691253 has 2 divisors, whose sum is σ = 23691254. Its totient is φ = 23691252.

The previous prime is 23691229. The next prime is 23691257. The reversal of 23691253 is 35219632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23251684 + 439569 = 4822^2 + 663^2 .

It is a cyclic number.

It is not a de Polignac number, because 23691253 - 2¹³ = 23683061 is a prime.

It is a super-2 number, since 2×23691253² = 1122550937420018, which contains 22 as substring.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23691257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11845626 + 11845627.

It is an arithmetic number, because the mean of its divisors is an integer number (11845627).

Almost surely, 2^23691253 is an apocalyptic number.

It is an amenable number.

23691253 is a deficient number, since it is larger than the sum of its proper divisors (1).

23691253 is an equidigital number, since it uses as much as digits as its factorization.

23691253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 31.

The square root of 23691253 is about 4867.3661255344. The cubic root of 23691253 is about 287.2076544348.

The spelling of 23691253 in words is "twenty-three million, six hundred ninety-one thousand, two hundred fifty-three".