53390031 has 8 divisors (see below), whose sum is σ = 71220480. Its totient is φ = 35576472.

The previous prime is 53390023. The next prime is 53390041. The reversal of 53390031 is 13009335.

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

It is not a de Polignac number, because 53390031 - 2³ = 53390023 is a prime.

It is a super-2 number, since 2×53390031² = 5700990820361922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53389983 and 53390010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53390011) 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, 10056 + ... + 14418.

It is an arithmetic number, because the mean of its divisors is an integer number (8902560).

Almost surely, 2^53390031 is an apocalyptic number.

53390031 is a deficient number, since it is larger than the sum of its proper divisors (17830449).

53390031 is a wasteful number, since it uses less digits than its factorization.

53390031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8445.

The product of its (nonzero) digits is 1215, while the sum is 24.

The square root of 53390031 is about 7306.8482261506. The cubic root of 53390031 is about 376.5477506812.

Adding to 53390031 its reverse (13009335), we get a palindrome (66399366).

The spelling of 53390031 in words is "fifty-three million, three hundred ninety thousand, thirty-one".