180317431044 has 135 divisors (see below), whose sum is σ = 487722774693. Its totient is φ = 58090478400.

The previous prime is 180317431003. The next prime is 180317431097. The reversal of 180317431044 is 440134713081.

The square root of 180317431044 is 424638.

It is a perfect power (a square), and thus also a powerful number.

180317431044 is a `hidden beast` number, since 180 + 3 + 1 + 7 + 431 + 0 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 473584644 + 179843846400 = 21762^2 + 424080^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 236947624 + ... + 236948384.

Almost surely, 2^180317431044 is an apocalyptic number.

180317431044 is the 424638-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180317431044

180317431044 is an abundant number, since it is smaller than the sum of its proper divisors (307405343649).

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

180317431044 is an frugal number, since it uses more digits than its factorization.

180317431044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600 (or 797 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

Multiplying 180317431044 by its sum of digits (36), we get a square (6491427517584 = 2547828²).

180317431044 divided by its sum of digits (36) gives a square (5008817529 = 70773²).

The spelling of 180317431044 in words is "one hundred eighty billion, three hundred seventeen million, four hundred thirty-one thousand, forty-four".