531738427 has 32 divisors (see below), whose sum is σ = 653253120. Its totient is φ = 426539520.

The previous prime is 531738409. The next prime is 531738457. The reversal of 531738427 is 724837135.

It is a happy number.

It is not a de Polignac number, because 531738427 - 2¹⁵ = 531705659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 531738427.

It is not an unprimeable number, because it can be changed into a prime (531738407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 365233 + ... + 366685.

It is an arithmetic number, because the mean of its divisors is an integer number (20414160).

Almost surely, 2^531738427 is an apocalyptic number.

531738427 is a deficient number, since it is larger than the sum of its proper divisors (121514693).

531738427 is a wasteful number, since it uses less digits than its factorization.

531738427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603.

The product of its digits is 141120, while the sum is 40.

The square root of 531738427 is about 23059.4541782758. The cubic root of 531738427 is about 810.1510803897.

The spelling of 531738427 in words is "five hundred thirty-one million, seven hundred thirty-eight thousand, four hundred twenty-seven".