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23071644831 = 318142489217
BaseRepresentation
bin10101011111001011…
…010101110010011111
32012112220100222211010
4111133023111302133
5334222320113311
614333213230303
71444510513434
oct253713256237
965486328733
1023071644831
11986a384274
12457a792393
132238b85561
14118c21bb8b
15900762da6
hex55f2d5c9f

23071644831 has 8 divisors (see below), whose sum is σ = 30932150704. Its totient is φ = 15296117760.

The previous prime is 23071644781. The next prime is 23071644859. The reversal of 23071644831 is 13844617032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23071644831 - 29 = 23071644319 is a prime.

It is a super-2 number, since 2×230716448312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23071644831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23071644131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21244066 + ... + 21245151.

It is an arithmetic number, because the mean of its divisors is an integer number (3866518838).

Almost surely, 223071644831 is an apocalyptic number.

23071644831 is a deficient number, since it is larger than the sum of its proper divisors (7860505873).

23071644831 is a wasteful number, since it uses less digits than its factorization.

23071644831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42489401.

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 23071644831 in words is "twenty-three billion, seventy-one million, six hundred forty-four thousand, eight hundred thirty-one".

Divisors: 1 3 181 543 42489217 127467651 7690548277 23071644831