23210149 has 2 divisors, whose sum is σ = 23210150. Its totient is φ = 23210148.

The previous prime is 23210111. The next prime is 23210171. The reversal of 23210149 is 94101232.

It is an a-pointer prime, because the next prime (23210171) can be obtained adding 23210149 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22259524 + 950625 = 4718^2 + 975^2 .

It is a cyclic number.

It is not a de Polignac number, because 23210149 - 2⁷ = 23210021 is a prime.

It is a super-2 number, since 2×23210149² = 1077422033204402, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23210189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605074 + 11605075.

It is an arithmetic number, because the mean of its divisors is an integer number (11605075).

Almost surely, 2^23210149 is an apocalyptic number.

It is an amenable number.

23210149 is a deficient number, since it is larger than the sum of its proper divisors (1).

23210149 is an equidigital number, since it uses as much as digits as its factorization.

23210149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 23210149 is about 4817.6912520418. The cubic root of 23210149 is about 285.2502121928.

The spelling of 23210149 in words is "twenty-three million, two hundred ten thousand, one hundred forty-nine".