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23910961 = 231039607
BaseRepresentation
bin101101100110…
…1101000110001
31122222210200011
41123031220301
522110122321
62212254521
7410145154
oct133155061
948883604
1023910961
1112551728
128011441
134c525c9
143265c9b
152174ae1
hex16cda31

23910961 has 4 divisors (see below), whose sum is σ = 24950592. Its totient is φ = 22871332.

The previous prime is 23910947. The next prime is 23910973. The reversal of 23910961 is 16901932.

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 not a de Polignac number, because 23910961 - 221 = 21813809 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23910941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519781 + ... + 519826.

It is an arithmetic number, because the mean of its divisors is an integer number (6237648).

Almost surely, 223910961 is an apocalyptic number.

It is an amenable number.

23910961 is a deficient number, since it is larger than the sum of its proper divisors (1039631).

23910961 is a wasteful number, since it uses less digits than its factorization.

23910961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039630.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 23910961 is about 4889.8835364454. The cubic root of 23910961 is about 288.0927596332.

The spelling of 23910961 in words is "twenty-three million, nine hundred ten thousand, nine hundred sixty-one".

Divisors: 1 23 1039607 23910961