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23230901 = 191222679
BaseRepresentation
bin101100010011…
…1100110110101
31121201020210202
41120213212311
521421342101
62145530245
7401313401
oct130474665
947636722
1023230901
11121277a1
127943985
134a74bc5
14312a101
15208d36b
hex16279b5

23230901 has 4 divisors (see below), whose sum is σ = 24453600. Its totient is φ = 22008204.

The previous prime is 23230859. The next prime is 23230903. The reversal of 23230901 is 10903232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23230901 is a prime.

It is a super-2 number, since 2×232309012 = 1079349522543602, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23230903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611321 + ... + 611358.

It is an arithmetic number, because the mean of its divisors is an integer number (6113400).

Almost surely, 223230901 is an apocalyptic number.

23230901 is the 2156-th centered decagonal number.

It is an amenable number.

23230901 is a deficient number, since it is larger than the sum of its proper divisors (1222699).

23230901 is a wasteful number, since it uses less digits than its factorization.

23230901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222698.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 23230901 is about 4819.8444995664. The cubic root of 23230901 is about 285.3352001448.

The spelling of 23230901 in words is "twenty-three million, two hundred thirty thousand, nine hundred one".

Divisors: 1 19 1222679 23230901