180478231 has 2 divisors, whose sum is σ = 180478232. Its totient is φ = 180478230.

The previous prime is 180478219. The next prime is 180478253. The reversal of 180478231 is 132874081.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (132874081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 180478231 - 2²¹ = 178381079 is a prime.

It is a super-2 number, since 2×180478231² = 65144783729778722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180478211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90239115 + 90239116.

It is an arithmetic number, because the mean of its divisors is an integer number (90239116).

Almost surely, 2^180478231 is an apocalyptic number.

180478231 is a deficient number, since it is larger than the sum of its proper divisors (1).

180478231 is an equidigital number, since it uses as much as digits as its factorization.

180478231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 180478231 is about 13434.2186598254. The cubic root of 180478231 is about 565.1212113660.

The spelling of 180478231 in words is "one hundred eighty million, four hundred seventy-eight thousand, two hundred thirty-one".