23153491 has 2 divisors, whose sum is σ = 23153492. Its totient is φ = 23153490.

The previous prime is 23153477. The next prime is 23153509. The reversal of 23153491 is 19435132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23153491 - 2¹³ = 23145299 is a prime.

It is a super-3 number, since 3×23153491³ (a number of 23 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (23153401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11576745 + 11576746.

It is an arithmetic number, because the mean of its divisors is an integer number (11576746).

Almost surely, 2^23153491 is an apocalyptic number.

23153491 is a deficient number, since it is larger than the sum of its proper divisors (1).

23153491 is an equidigital number, since it uses as much as digits as its factorization.

23153491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 28.

The square root of 23153491 is about 4811.8074566632. The cubic root of 23153491 is about 285.0179161816.

The spelling of 23153491 in words is "twenty-three million, one hundred fifty-three thousand, four hundred ninety-one".