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31941680942 = 2149318795693
BaseRepresentation
bin11101101111110111…
…110101111100101110
310001110001220111220002
4131233313311330232
51010404032242232
622401313024302
72210354544143
oct355767657456
9101401814802
1031941680942
1112601278726
126235255092
133020730632
1417902823ca
15c6e31bb62
hex76fdf5f2e

31941680942 has 16 divisors (see below), whose sum is σ = 47978555040. Its totient is φ = 15948847392.

The previous prime is 31941680941. The next prime is 31941680989. The reversal of 31941680942 is 24908614913.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31941680941) 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, 5607848 + ... + 5613540.

It is an arithmetic number, because the mean of its divisors is an integer number (2998659690).

Almost surely, 231941680942 is an apocalyptic number.

31941680942 is a deficient number, since it is larger than the sum of its proper divisors (16036874098).

31941680942 is a wasteful number, since it uses less digits than its factorization.

31941680942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9067.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 31941680942 in words is "thirty-one billion, nine hundred forty-one million, six hundred eighty thousand, nine hundred forty-two".

Divisors: 1 2 1493 1879 2986 3758 5693 11386 2805347 5610694 8499649 10697147 16999298 21394294 15970840471 31941680942