18017473031 has 2 divisors, whose sum is σ = 18017473032. Its totient is φ = 18017473030.

The previous prime is 18017472911. The next prime is 18017473037. The reversal of 18017473031 is 13037471081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18017473031 - 2²⁶ = 17950364167 is a prime.

It is a super-2 number, since 2×18017473031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18017472982 and 18017473000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18017473037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9008736515 + 9008736516.

It is an arithmetic number, because the mean of its divisors is an integer number (9008736516).

Almost surely, 2^18017473031 is an apocalyptic number.

18017473031 is a deficient number, since it is larger than the sum of its proper divisors (1).

18017473031 is an equidigital number, since it uses as much as digits as its factorization.

18017473031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 35.

The spelling of 18017473031 in words is "eighteen billion, seventeen million, four hundred seventy-three thousand, thirty-one".