180018031 has 2 divisors, whose sum is σ = 180018032. Its totient is φ = 180018030.

The previous prime is 180018029. The next prime is 180018107. The reversal of 180018031 is 130810081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 180018031 - 2¹ = 180018029 is a prime.

It is a super-2 number, since 2×180018031² = 64812982970233922, which contains 22 as substring.

Together with 180018029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 180017993 and 180018011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180018001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90009015 + 90009016.

It is an arithmetic number, because the mean of its divisors is an integer number (90009016).

Almost surely, 2^180018031 is an apocalyptic number.

180018031 is a deficient number, since it is larger than the sum of its proper divisors (1).

180018031 is an equidigital number, since it uses as much as digits as its factorization.

180018031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 180018031 is about 13417.0798238663. The cubic root of 180018031 is about 564.6404698332.

The spelling of 180018031 in words is "one hundred eighty million, eighteen thousand, thirty-one".