1230320131 has 2 divisors, whose sum is σ = 1230320132. Its totient is φ = 1230320130.

The previous prime is 1230320123. The next prime is 1230320149. The reversal of 1230320131 is 1310230321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1230320131 - 2³ = 1230320123 is a prime.

It is a super-2 number, since 2×1230320131² = 3027375249487714322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1230320191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615160065 + 615160066.

It is an arithmetic number, because the mean of its divisors is an integer number (615160066).

Almost surely, 2^1230320131 is an apocalyptic number.

1230320131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230320131 is an equidigital number, since it uses as much as digits as its factorization.

1230320131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1230320131 is about 35075.9195317813. The cubic root of 1230320131 is about 1071.5342159812.

Adding to 1230320131 its reverse (1310230321), we get a palindrome (2540550452).

The spelling of 1230320131 in words is "one billion, two hundred thirty million, three hundred twenty thousand, one hundred thirty-one".