18070131 has 8 divisors (see below), whose sum is σ = 24131520. Its totient is φ = 12027752.

The previous prime is 18070123. The next prime is 18070141. The reversal of 18070131 is 13107081.

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 18070131 - 2³ = 18070123 is a prime.

It is a super-2 number, since 2×18070131² = 653059268714322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18070098 and 18070107.

It is not an unprimeable number, because it can be changed into a prime (18070141) 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, 2361 + ... + 6458.

It is an arithmetic number, because the mean of its divisors is an integer number (3016440).

Almost surely, 2^18070131 is an apocalyptic number.

18070131 is a deficient number, since it is larger than the sum of its proper divisors (6061389).

18070131 is an equidigital number, since it uses as much as digits as its factorization.

18070131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9505.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 18070131 is about 4250.8976699046. The cubic root of 18070131 is about 262.4140598489.

The spelling of 18070131 in words is "eighteen million, seventy thousand, one hundred thirty-one".