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331980863 = 1954132297
BaseRepresentation
bin10011110010011…
…010000000111111
3212010200101010112
4103302122000333
51134441341423
652535300235
711140535144
oct2362320077
9763611115
10331980863
11160438155
129321a67b
1353a175a6
143213a3cb
151e229a78
hex13c9a03f

331980863 has 8 divisors (see below), whose sum is σ = 350110320. Its totient is φ = 313917120.

The previous prime is 331980833. The next prime is 331980871. The reversal of 331980863 is 368089133.

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 331980863 - 210 = 331979839 is a prime.

It is a super-2 number, since 2×3319808632 = 220422586796449538, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331980863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331980833) 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, 5870 + ... + 26427.

It is an arithmetic number, because the mean of its divisors is an integer number (43763790).

Almost surely, 2331980863 is an apocalyptic number.

331980863 is a deficient number, since it is larger than the sum of its proper divisors (18129457).

331980863 is a wasteful number, since it uses less digits than its factorization.

331980863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32857.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 331980863 is about 18220.3420110601. The cubic root of 331980863 is about 692.4222526504.

The spelling of 331980863 in words is "three hundred thirty-one million, nine hundred eighty thousand, eight hundred sixty-three".

Divisors: 1 19 541 10279 32297 613643 17472677 331980863