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31368113293 = 11101313212131
BaseRepresentation
bin11101001101101011…
…110110110010001101
32222222002122020222211
4131031223312302031
51003220214111133
622224343310421
72160221364226
oct351553666215
988862566884
1031368113293
1112337533880
1260b514b411
132c5b95abaa
14173801a24d
15c38cc0bcd
hex74daf6c8d

31368113293 has 16 divisors (see below), whose sum is σ = 34295556672. Its totient is φ = 28453392000.

The previous prime is 31368113263. The next prime is 31368113303. The reversal of 31368113293 is 39231186313.

It is not a de Polignac number, because 31368113293 - 29 = 31368112781 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 (31368113243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14718838 + ... + 14720968.

It is an arithmetic number, because the mean of its divisors is an integer number (2143472292).

Almost surely, 231368113293 is an apocalyptic number.

It is an amenable number.

31368113293 is a deficient number, since it is larger than the sum of its proper divisors (2927443379).

31368113293 is a wasteful number, since it uses less digits than its factorization.

31368113293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4476.

The product of its digits is 69984, while the sum is 40.

The spelling of 31368113293 in words is "thirty-one billion, three hundred sixty-eight million, one hundred thirteen thousand, two hundred ninety-three".

Divisors: 1 11 1013 1321 2131 11143 14531 23441 1338173 2158703 2815051 14719903 23745733 30965561 2851646663 31368113293