113131000 has 32 divisors (see below), whose sum is σ = 264728880. Its totient is φ = 45252000.

The previous prime is 113130961. The next prime is 113131037. The reversal of 113131000 is 131311.

It is a super-2 number, since 2×113131000² = 25597246322000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55566 + ... + 57565.

Almost surely, 2^113131000 is an apocalyptic number.

113131000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113131000 is an abundant number, since it is smaller than the sum of its proper divisors (151597880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

113131000 is a wasteful number, since it uses less digits than its factorization.

113131000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113152 (or 113138 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 10.

The square root of 113131000 is about 10636.3057496482. The cubic root of 113131000 is about 483.6455638804.

Adding to 113131000 its reverse (131311), we get a palindrome (113262311).

It can be divided in two parts, 1131 and 31000, that added together give a triangular number (32131 = T₂₅₃).

The spelling of 113131000 in words is "one hundred thirteen million, one hundred thirty-one thousand".