180136231 has 8 divisors (see below), whose sum is σ = 197948304. Its totient is φ = 162563520.

The previous prime is 180136219. The next prime is 180136249. The reversal of 180136231 is 132631081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 180136231 - 2¹⁵ = 180103463 is a prime.

It is a super-2 number, since 2×180136231² = 64898123437770722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 180136196 and 180136205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180130231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58260 + ... + 61273.

It is an arithmetic number, because the mean of its divisors is an integer number (24743538).

Almost surely, 2^180136231 is an apocalyptic number.

180136231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

180136231 is a deficient number, since it is larger than the sum of its proper divisors (17812073).

180136231 is a wasteful number, since it uses less digits than its factorization.

180136231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119681.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 180136231 is about 13421.4839343494. The cubic root of 180136231 is about 564.7640239409.

The spelling of 180136231 in words is "one hundred eighty million, one hundred thirty-six thousand, two hundred thirty-one".