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23010431 = 52343997
BaseRepresentation
bin101011111000…
…1110001111111
31121022001101012
41113301301333
521342313211
62141105435
7366404543
oct127616177
947261335
1023010431
1111a97094
12785827b
1349c8752
1430ada23
152047d8b
hex15f1c7f

23010431 has 4 divisors (see below), whose sum is σ = 23054952. Its totient is φ = 22965912.

The previous prime is 23010347. The next prime is 23010433. The reversal of 23010431 is 13401032.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23010431 is a prime.

It is a super-2 number, since 2×230104312 = 1058959869611522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23010433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21476 + ... + 22521.

It is an arithmetic number, because the mean of its divisors is an integer number (5763738).

Almost surely, 223010431 is an apocalyptic number.

23010431 is a deficient number, since it is larger than the sum of its proper divisors (44521).

23010431 is an equidigital number, since it uses as much as digits as its factorization.

23010431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44520.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 23010431 is about 4796.9189069652. The cubic root of 23010431 is about 284.4296833375.

Adding to 23010431 its reverse (13401032), we get a palindrome (36411463).

The spelling of 23010431 in words is "twenty-three million, ten thousand, four hundred thirty-one".

Divisors: 1 523 43997 23010431