53310431 has 4 divisors (see below), whose sum is σ = 53828112. Its totient is φ = 52792752.

The previous prime is 53310427. The next prime is 53310463. The reversal of 53310431 is 13401335.

It is a happy number.

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 53310431 - 2² = 53310427 is a prime.

It is a super-2 number, since 2×53310431² = 5684004106811522, which 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 (53310331) 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, 258686 + ... + 258891.

It is an arithmetic number, because the mean of its divisors is an integer number (13457028).

Almost surely, 2^53310431 is an apocalyptic number.

53310431 is a deficient number, since it is larger than the sum of its proper divisors (517681).

53310431 is a wasteful number, since it uses less digits than its factorization.

53310431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517680.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 53310431 is about 7301.3992494590. The cubic root of 53310431 is about 376.3605240362.

Adding to 53310431 its reverse (13401335), we get a palindrome (66711766).

The spelling of 53310431 in words is "fifty-three million, three hundred ten thousand, four hundred thirty-one".