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80631 = 3217231
BaseRepresentation
bin10011101011110111
311002121100
4103223313
510040011
61421143
7454035
oct235367
9132540
1080631
1155641
123a7b3
132a915
1421555
1518d56
hex13af7

80631 has 18 divisors (see below), whose sum is σ = 127712. Its totient is φ = 48960.

The previous prime is 80629. The next prime is 80651. The reversal of 80631 is 13608.

It is not a de Polignac number, because 80631 - 21 = 80629 is a prime.

It is a super-2 number, since 2×806312 = 13002716322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80611) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2586 + ... + 2616.

280631 is an apocalyptic number.

80631 is a deficient number, since it is larger than the sum of its proper divisors (47081).

80631 is a wasteful number, since it uses less digits than its factorization.

80631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 80631 is about 283.9559825043. The cubic root of 80631 is about 43.2016846051.

The spelling of 80631 in words is "eighty thousand, six hundred thirty-one".