531425352431 has 4 divisors (see below), whose sum is σ = 545788199832. Its totient is φ = 517062505032.

The previous prime is 531425352421. The next prime is 531425352463. The reversal of 531425352431 is 134253524135.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 531425352431 - 2²² = 531421158127 is a prime.

It is a super-2 number, since 2×531425352431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531425352421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7181423645 + ... + 7181423718.

It is an arithmetic number, because the mean of its divisors is an integer number (136447049958).

Almost surely, 2^531425352431 is an apocalyptic number.

531425352431 is a deficient number, since it is larger than the sum of its proper divisors (14362847401).

531425352431 is a wasteful number, since it uses less digits than its factorization.

531425352431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14362847400.

The product of its digits is 216000, while the sum is 38.

Adding to 531425352431 its reverse (134253524135), we get a palindrome (665678876566).

The spelling of 531425352431 in words is "five hundred thirty-one billion, four hundred twenty-five million, three hundred fifty-two thousand, four hundred thirty-one".