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31900576046 = 297417739367
BaseRepresentation
bin11101101101011011…
…000010100100101110
310001100012120011120112
4131231123002210232
51010313021413141
622353244020022
72206345264613
oct355533024456
9101305504515
1031900576046
1112590052a39
126223531612
13301506ac01
141788a2250a
15c6a8ec7eb
hex76d6c292e

31900576046 has 16 divisors (see below), whose sum is σ = 48356974176. Its totient is φ = 15781671936.

The previous prime is 31900576021. The next prime is 31900576049. The reversal of 31900576046 is 64067500913.

It is a junction number, because it is equal to n+sod(n) for n = 31900575994 and 31900576012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31900576049) 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, 790655 + ... + 830021.

It is an arithmetic number, because the mean of its divisors is an integer number (3022310886).

Almost surely, 231900576046 is an apocalyptic number.

31900576046 is a deficient number, since it is larger than the sum of its proper divisors (16456398130).

31900576046 is a wasteful number, since it uses less digits than its factorization.

31900576046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43643.

The product of its (nonzero) digits is 136080, while the sum is 41.

The spelling of 31900576046 in words is "thirty-one billion, nine hundred million, five hundred seventy-six thousand, forty-six".

Divisors: 1 2 97 194 4177 8354 39367 78734 405169 810338 3818599 7637198 164435959 328871918 15950288023 31900576046