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31053990965 = 511689531337
BaseRepresentation
bin11100111010111101…
…100100110000110101
32222011012120012011112
4130322331210300311
51002044310202330
622133242444405
72146355365544
oct347275446065
988135505145
1031053990965
1112196194048
126027b03705
132c0b8570aa
14170840c15b
15c1b422795
hex73af64c35

31053990965 has 8 divisors (see below), whose sum is σ = 37268047320. Its totient is φ = 24841020672.

The previous prime is 31053990953. The next prime is 31053990977. The reversal of 31053990965 is 56909935013.

It is an interprime number because it is at equal distance from previous prime (31053990953) and next prime (31053990977).

It can be written as a sum of positive squares in 4 ways, for example, as 15937042564 + 15116948401 = 126242^2 + 122951^2 .

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 31053990965 - 26 = 31053990901 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207224 + ... + 324113.

It is an arithmetic number, because the mean of its divisors is an integer number (4658505915).

Almost surely, 231053990965 is an apocalyptic number.

It is an amenable number.

31053990965 is a deficient number, since it is larger than the sum of its proper divisors (6214056355).

31053990965 is a wasteful number, since it uses less digits than its factorization.

31053990965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543031.

The product of its (nonzero) digits is 984150, while the sum is 50.

The spelling of 31053990965 in words is "thirty-one billion, fifty-three million, nine hundred ninety thousand, nine hundred sixty-five".

Divisors: 1 5 11689 58445 531337 2656685 6210798193 31053990965