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31712761327 = 133055379843
BaseRepresentation
bin11101100010001110…
…100101010111101111
310000212010011012012211
4131202032211113233
51004421431330302
622322454311251
72201605011052
oct354216452757
9100763135184
1031712761327
11124a4032a65
126190658527
132cb518c040
14176bad2a99
15c5919dad7
hex7623a55ef

31712761327 has 8 divisors (see below), whose sum is σ = 34153750064. Its totient is φ = 29271993408.

The previous prime is 31712761279. The next prime is 31712761349. The reversal of 31712761327 is 72316721713.

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

It is a cyclic number.

It is not a de Polignac number, because 31712761327 - 223 = 31704372719 is a prime.

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 31712761327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31712761727) 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, 357268 + ... + 437110.

It is an arithmetic number, because the mean of its divisors is an integer number (4269218758).

Almost surely, 231712761327 is an apocalyptic number.

31712761327 is a deficient number, since it is larger than the sum of its proper divisors (2440988737).

31712761327 is a wasteful number, since it uses less digits than its factorization.

31712761327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110409.

The product of its digits is 74088, while the sum is 40.

The spelling of 31712761327 in words is "thirty-one billion, seven hundred twelve million, seven hundred sixty-one thousand, three hundred twenty-seven".

Divisors: 1 13 30553 79843 397189 1037959 2439443179 31712761327