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23045971 = 131772767
BaseRepresentation
bin101011111101…
…0011101010011
31121100212010111
41113322131103
521344432341
62141542151
7366613264
oct127723523
947325114
1023045971
1112010863
127874957
134a0b990
1430bc96b
152053681
hex15fa753

23045971 has 4 divisors (see below), whose sum is σ = 24818752. Its totient is φ = 21273192.

The previous prime is 23045929. The next prime is 23046007. The reversal of 23045971 is 17954032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23045971 - 213 = 23037779 is a prime.

It is a super-2 number, since 2×230459712 = 1062233558665682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23045921) 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, 886371 + ... + 886396.

It is an arithmetic number, because the mean of its divisors is an integer number (6204688).

Almost surely, 223045971 is an apocalyptic number.

23045971 is a deficient number, since it is larger than the sum of its proper divisors (1772781).

23045971 is a wasteful number, since it uses less digits than its factorization.

23045971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772780.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 23045971 is about 4800.6219388742. The cubic root of 23045971 is about 284.5760434975.

The spelling of 23045971 in words is "twenty-three million, forty-five thousand, nine hundred seventy-one".

Divisors: 1 13 1772767 23045971