23990101 has 2 divisors, whose sum is σ = 23990102. Its totient is φ = 23990100.

The previous prime is 23990089. The next prime is 23990129. The reversal of 23990101 is 10109932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22791076 + 1199025 = 4774^2 + 1095^2 .

It is a cyclic number.

It is not a de Polignac number, because 23990101 - 2¹¹ = 23988053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23990401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11995050 + 11995051.

It is an arithmetic number, because the mean of its divisors is an integer number (11995051).

Almost surely, 2^23990101 is an apocalyptic number.

It is an amenable number.

23990101 is a deficient number, since it is larger than the sum of its proper divisors (1).

23990101 is an equidigital number, since it uses as much as digits as its factorization.

23990101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 23990101 is about 4897.9690689101. The cubic root of 23990101 is about 288.4102507509.

The spelling of 23990101 in words is "twenty-three million, nine hundred ninety thousand, one hundred one".