180738231 has 4 divisors (see below), whose sum is σ = 240984312. Its totient is φ = 120492152.

The previous prime is 180738199. The next prime is 180738251. The reversal of 180738231 is 132837081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 180738231 - 2⁵ = 180738199 is a prime.

It is a super-2 number, since 2×180738231² = 65332616290018722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 180738192 and 180738201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180738251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30123036 + ... + 30123041.

It is an arithmetic number, because the mean of its divisors is an integer number (60246078).

Almost surely, 2^180738231 is an apocalyptic number.

180738231 is a deficient number, since it is larger than the sum of its proper divisors (60246081).

180738231 is an equidigital number, since it uses as much as digits as its factorization.

180738231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60246080.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 180738231 is about 13443.8919588042. The cubic root of 180738231 is about 565.3924555547.

The spelling of 180738231 in words is "one hundred eighty million, seven hundred thirty-eight thousand, two hundred thirty-one".