531354431420 has 24 divisors (see below), whose sum is σ = 1115888934048. Its totient is φ = 212533272000.

The previous prime is 531354431393. The next prime is 531354431441. The reversal of 531354431420 is 24134453135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6056 + ... + 1030895.

It is an arithmetic number, because the mean of its divisors is an integer number (46495372252).

Almost surely, 2^531354431420 is an apocalyptic number.

It is an amenable number.

531354431420 is an abundant number, since it is smaller than the sum of its proper divisors (584534502628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531354431420 is a wasteful number, since it uses less digits than its factorization.

531354431420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062581 (or 1062579 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 531354431420 its reverse (24134453135), we get a palindrome (555488884555).

The spelling of 531354431420 in words is "five hundred thirty-one billion, three hundred fifty-four million, four hundred thirty-one thousand, four hundred twenty".