23156743 has 2 divisors, whose sum is σ = 23156744. Its totient is φ = 23156742.

The previous prime is 23156729. The next prime is 23156767. The reversal of 23156743 is 34765132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23156743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23156773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11578371 + 11578372.

It is an arithmetic number, because the mean of its divisors is an integer number (11578372).

Almost surely, 2^23156743 is an apocalyptic number.

23156743 is a deficient number, since it is larger than the sum of its proper divisors (1).

23156743 is an equidigital number, since it uses as much as digits as its factorization.

23156743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 31.

The square root of 23156743 is about 4812.1453635567. The cubic root of 23156743 is about 285.0312595240.

The spelling of 23156743 in words is "twenty-three million, one hundred fifty-six thousand, seven hundred forty-three".