318158941 has 2 divisors, whose sum is σ = 318158942. Its totient is φ = 318158940.

The previous prime is 318158903. The next prime is 318158969. The reversal of 318158941 is 149851813.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266016100 + 52142841 = 16310^2 + 7221^2 .

It is a cyclic number.

It is not a de Polignac number, because 318158941 - 2⁹ = 318158429 is a prime.

It is a super-2 number, since 2×318158941² = 202450223476482962, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 318158894 and 318158903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318158341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159079470 + 159079471.

It is an arithmetic number, because the mean of its divisors is an integer number (159079471).

Almost surely, 2^318158941 is an apocalyptic number.

It is an amenable number.

318158941 is a deficient number, since it is larger than the sum of its proper divisors (1).

318158941 is an equidigital number, since it uses as much as digits as its factorization.

318158941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 40.

The square root of 318158941 is about 17837.0104277595. The cubic root of 318158941 is about 682.6761189053.

The spelling of 318158941 in words is "three hundred eighteen million, one hundred fifty-eight thousand, nine hundred forty-one".