201431332231 has 2 divisors, whose sum is σ = 201431332232. Its totient is φ = 201431332230.

The previous prime is 201431332229. The next prime is 201431332237. The reversal of 201431332231 is 132233134102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201431332231 - 2¹ = 201431332229 is a prime.

It is a super-2 number, since 2×201431332231² (a number of 23 digits) contains 22 as substring.

Together with 201431332229, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 201431332196 and 201431332205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201431332237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100715666115 + 100715666116.

It is an arithmetic number, because the mean of its divisors is an integer number (100715666116).

Almost surely, 2^201431332231 is an apocalyptic number.

201431332231 is a deficient number, since it is larger than the sum of its proper divisors (1).

201431332231 is an equidigital number, since it uses as much as digits as its factorization.

201431332231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 201431332231 its reverse (132233134102), we get a palindrome (333664466333).

The spelling of 201431332231 in words is "two hundred one billion, four hundred thirty-one million, three hundred thirty-two thousand, two hundred thirty-one".