23534149 has 2 divisors, whose sum is σ = 23534150. Its totient is φ = 23534148.

The previous prime is 23534113. The next prime is 23534207. The reversal of 23534149 is 94143532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22137025 + 1397124 = 4705^2 + 1182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23534149 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23534149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23534249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11767074 + 11767075.

It is an arithmetic number, because the mean of its divisors is an integer number (11767075).

Almost surely, 2^23534149 is an apocalyptic number.

It is an amenable number.

23534149 is a deficient number, since it is larger than the sum of its proper divisors (1).

23534149 is an equidigital number, since it uses as much as digits as its factorization.

23534149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 23534149 is about 4851.2007791886. The cubic root of 23534149 is about 286.5713917806.

The spelling of 23534149 in words is "twenty-three million, five hundred thirty-four thousand, one hundred forty-nine".