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31302000023 = 721737577431
BaseRepresentation
bin11101001001101111…
…101001110110010111
32222210111020100122012
4131021233221312113
51003101303000043
622214022254435
72155456416200
oct351157516627
988714210565
1031302000023
1112303187a08
126096b8741b
132c4b050508
14172d32a5a7
15c330b1a18
hex749be9d97

31302000023 has 12 divisors (see below), whose sum is σ = 38554445232. Its totient is φ = 25252032960.

The previous prime is 31302000011. The next prime is 31302000049. The reversal of 31302000023 is 32000020313.

It is not a de Polignac number, because 31302000023 - 28 = 31301999767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31301999971 and 31302000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31302000083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18787883 + ... + 18789548.

It is an arithmetic number, because the mean of its divisors is an integer number (3212870436).

Almost surely, 231302000023 is an apocalyptic number.

31302000023 is a deficient number, since it is larger than the sum of its proper divisors (7252445209).

31302000023 is a wasteful number, since it uses less digits than its factorization.

31302000023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37577462 (or 37577455 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 31302000023 its reverse (32000020313), we get a palindrome (63302020336).

The spelling of 31302000023 in words is "thirty-one billion, three hundred two million, twenty-three", and thus it is an aban number.

Divisors: 1 7 17 49 119 833 37577431 263042017 638816327 1841294119 4471714289 31302000023