53313631 has 4 divisors (see below), whose sum is σ = 60929872. Its totient is φ = 45697392.

The previous prime is 53313619. The next prime is 53313641. The reversal of 53313631 is 13631335.

53313631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 53313631 - 2⁵ = 53313599 is a prime.

It is a super-2 number, since 2×53313631² = 5684686500808322, 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 = 53313596 and 53313605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53313641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3808110 + ... + 3808123.

It is an arithmetic number, because the mean of its divisors is an integer number (15232468).

Almost surely, 2^53313631 is an apocalyptic number.

53313631 is a deficient number, since it is larger than the sum of its proper divisors (7616241).

53313631 is an equidigital number, since it uses as much as digits as its factorization.

53313631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7616240.

The product of its digits is 2430, while the sum is 25.

The square root of 53313631 is about 7301.6183822492. The cubic root of 53313631 is about 376.3680543297.

Adding to 53313631 its reverse (13631335), we get a palindrome (66944966).

It can be divided in two parts, 53313 and 631, that multiplied together give a triangular number (33640503 = T₈₂₀₂).

The spelling of 53313631 in words is "fifty-three million, three hundred thirteen thousand, six hundred thirty-one".