18045031 has 2 divisors, whose sum is σ = 18045032. Its totient is φ = 18045030.

The previous prime is 18045019. The next prime is 18045037. The reversal of 18045031 is 13054081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18045031 - 2⁹ = 18044519 is a prime.

It is a super-2 number, since 2×18045031² = 651246287581922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18044993 and 18045011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18045037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9022515 + 9022516.

It is an arithmetic number, because the mean of its divisors is an integer number (9022516).

Almost surely, 2^18045031 is an apocalyptic number.

18045031 is a deficient number, since it is larger than the sum of its proper divisors (1).

18045031 is an equidigital number, since it uses as much as digits as its factorization.

18045031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 18045031 is about 4247.9443263772. The cubic root of 18045031 is about 262.2925029931.

The spelling of 18045031 in words is "eighteen million, forty-five thousand, thirty-one".