180031040 has 112 divisors (see below), whose sum is σ = 493776000. Its totient is φ = 61243392.

The previous prime is 180031039. The next prime is 180031057. The reversal of 180031040 is 40130081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×180031040² = 64822350726963200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400736 + ... + 401184.

Almost surely, 2^180031040 is an apocalyptic number.

180031040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180031040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246888000).

180031040 is an abundant number, since it is smaller than the sum of its proper divisors (313744960).

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

180031040 is a wasteful number, since it uses less digits than its factorization.

180031040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 180031040 is about 13417.5646076328. The cubic root of 180031040 is about 564.6540707503.

The spelling of 180031040 in words is "one hundred eighty million, thirty-one thousand, forty".