320015131 has 2 divisors, whose sum is σ = 320015132. Its totient is φ = 320015130.

The previous prime is 320015107. The next prime is 320015147. The reversal of 320015131 is 131510023.

It is an a-pointer prime, because the next prime (320015147) can be obtained adding 320015131 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320015131 - 2⁹ = 320014619 is a prime.

It is a super-2 number, since 2×320015131² = 204819368137894322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320015231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160007565 + 160007566.

It is an arithmetic number, because the mean of its divisors is an integer number (160007566).

Almost surely, 2^320015131 is an apocalyptic number.

320015131 is a deficient number, since it is larger than the sum of its proper divisors (1).

320015131 is an equidigital number, since it uses as much as digits as its factorization.

320015131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 320015131 is about 17888.9667393061. The cubic root of 320015131 is about 684.0011591866.

Adding to 320015131 its reverse (131510023), we get a palindrome (451525154).

The spelling of 320015131 in words is "three hundred twenty million, fifteen thousand, one hundred thirty-one".