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113031 = 3219661
BaseRepresentation
bin11011100110000111
312202001100
4123212013
512104111
62231143
7650352
oct334607
9182040
10113031
1177a16
12554b3
133c5a9
142d299
1523756
hex1b987

113031 has 12 divisors (see below), whose sum is σ = 172120. Its totient is φ = 71280.

The previous prime is 113027. The next prime is 113039. The reversal of 113031 is 130311.

It is not a de Polignac number, because 113031 - 22 = 113027 is a prime.

It is a super-2 number, since 2×1130312 = 25552013922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160 + ... + 501.

2113031 is an apocalyptic number.

113031 is a deficient number, since it is larger than the sum of its proper divisors (59089).

113031 is a wasteful number, since it uses less digits than its factorization.

113031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 9.

The square root of 113031 is about 336.2008328366. The cubic root of 113031 is about 48.3503018767.

Adding to 113031 its reverse (130311), we get a palindrome (243342).

The spelling of 113031 in words is "one hundred thirteen thousand, thirty-one".

Divisors: 1 3 9 19 57 171 661 1983 5949 12559 37677 113031