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23131189071 = 322570132119
BaseRepresentation
bin10101100010101110…
…011110111101001111
32012201001102011011100
4111202232132331033
5334333041022241
614343141354143
71446132602004
oct254256367517
965631364140
1023131189071
11989aa53791
124596708953
132248302c33
1411960bb8ab
15905ac59b6
hex562b9ef4f

23131189071 has 6 divisors (see below), whose sum is σ = 33411717560. Its totient is φ = 15420792708.

The previous prime is 23131189051. The next prime is 23131189087. The reversal of 23131189071 is 17098113132.

It is not a de Polignac number, because 23131189071 - 221 = 23129091919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131189051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1285066051 + ... + 1285066068.

Almost surely, 223131189071 is an apocalyptic number.

23131189071 is a deficient number, since it is larger than the sum of its proper divisors (10280528489).

23131189071 is a wasteful number, since it uses less digits than its factorization.

23131189071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570132125 (or 2570132122 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The spelling of 23131189071 in words is "twenty-three billion, one hundred thirty-one million, one hundred eighty-nine thousand, seventy-one".

Divisors: 1 3 9 2570132119 7710396357 23131189071