431401120531 has 2 divisors, whose sum is σ = 431401120532. Its totient is φ = 431401120530.

The previous prime is 431401120529. The next prime is 431401120597. The reversal of 431401120531 is 135021104134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431401120531 - 2¹ = 431401120529 is a prime.

It is a super-2 number, since 2×431401120531² (a number of 24 digits) contains 22 as substring.

Together with 431401120529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 431401120496 and 431401120505.

It is not a weakly prime, because it can be changed into another prime (431401120231) 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, 215700560265 + 215700560266.

It is an arithmetic number, because the mean of its divisors is an integer number (215700560266).

Almost surely, 2^431401120531 is an apocalyptic number.

431401120531 is a deficient number, since it is larger than the sum of its proper divisors (1).

431401120531 is an equidigital number, since it uses as much as digits as its factorization.

431401120531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 431401120531 its reverse (135021104134), we get a palindrome (566422224665).

The spelling of 431401120531 in words is "four hundred thirty-one billion, four hundred one million, one hundred twenty thousand, five hundred thirty-one".