53320031 has 8 divisors (see below), whose sum is σ = 55244928. Its totient is φ = 51408000.

The previous prime is 53320019. The next prime is 53320051. The reversal of 53320031 is 13002335.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53320031 is a prime.

It is a super-2 number, since 2×53320031² = 5686051411681922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53319991 and 53320009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53320051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5651 + ... + 11771.

It is an arithmetic number, because the mean of its divisors is an integer number (6905616).

Almost surely, 2^53320031 is an apocalyptic number.

53320031 is a deficient number, since it is larger than the sum of its proper divisors (1924897).

53320031 is a wasteful number, since it uses less digits than its factorization.

53320031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6433.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 53320031 is about 7302.0566281014. The cubic root of 53320031 is about 376.3831140129.

Adding to 53320031 its reverse (13002335), we get a palindrome (66322366).

The spelling of 53320031 in words is "fifty-three million, three hundred twenty thousand, thirty-one".