1232131031 has 2 divisors, whose sum is σ = 1232131032. Its totient is φ = 1232131030.

The previous prime is 1232131007. The next prime is 1232131037. The reversal of 1232131031 is 1301312321.

It is a strong prime.

It is an emirp because it is prime and its reverse (1301312321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1232131031 - 2⁶ = 1232130967 is a prime.

It is a super-2 number, since 2×1232131031² = 3036293755106245922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1232131037) 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, 616065515 + 616065516.

It is an arithmetic number, because the mean of its divisors is an integer number (616065516).

Almost surely, 2^1232131031 is an apocalyptic number.

1232131031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232131031 is an equidigital number, since it uses as much as digits as its factorization.

1232131031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1232131031 is about 35101.7240459781. The cubic root of 1232131031 is about 1072.0596862768.

Adding to 1232131031 its reverse (1301312321), we get a palindrome (2533443352).

The spelling of 1232131031 in words is "one billion, two hundred thirty-two million, one hundred thirty-one thousand, thirty-one".