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31350561134 = 279251790523
BaseRepresentation
bin11101001100101000…
…111001100101101110
32222220212121111221212
4131030220321211232
51003201220424014
622222515154422
72156616241604
oct351450714556
988825544855
1031350561134
1112328635662
1260ab2a5a12
132c581239b9
14173596b874
15c374a523e
hex74ca3996e

31350561134 has 16 divisors (see below), whose sum is σ = 47810891520. Its totient is φ = 15415179000.

The previous prime is 31350561107. The next prime is 31350561139. The reversal of 31350561134 is 43116505313.

It is a self number, because there is not a number n which added to its sum of digits gives 31350561134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31350561139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355604 + ... + 434919.

It is an arithmetic number, because the mean of its divisors is an integer number (2988180720).

Almost surely, 231350561134 is an apocalyptic number.

31350561134 is a deficient number, since it is larger than the sum of its proper divisors (16460330386).

31350561134 is a wasteful number, since it uses less digits than its factorization.

31350561134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790855.

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 31350561134 in words is "thirty-one billion, three hundred fifty million, five hundred sixty-one thousand, one hundred thirty-four".

Divisors: 1 2 79 158 251 502 19829 39658 790523 1581046 62451317 124902634 198421273 396842546 15675280567 31350561134