231203221332131 has 2 divisors, whose sum is σ = 231203221332132. Its totient is φ = 231203221332130.

The previous prime is 231203221332119. The next prime is 231203221332163. The reversal of 231203221332131 is 131233122302132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231203221332131 - 2¹⁴ = 231203221315747 is a prime.

It is a super-2 number, since 2×231203221332131² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231203221332094 and 231203221332103.

It is not a weakly prime, because it can be changed into another prime (231203221332331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115601610666065 + 115601610666066.

It is an arithmetic number, because the mean of its divisors is an integer number (115601610666066).

Almost surely, 2^{231203221332131} is an apocalyptic number.

231203221332131 is a deficient number, since it is larger than the sum of its proper divisors (1).

231203221332131 is an equidigital number, since it uses as much as digits as its factorization.

231203221332131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 231203221332131 its reverse (131233122302132), we get a palindrome (362436343634263).

The spelling of 231203221332131 in words is "two hundred thirty-one trillion, two hundred three billion, two hundred twenty-one million, three hundred thirty-two thousand, one hundred thirty-one".