53135431 has 4 divisors (see below), whose sum is σ = 53405352. Its totient is φ = 52865512.

The previous prime is 53135413. The next prime is 53135443. The reversal of 53135431 is 13453135.

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 53135431 - 2⁵ = 53135399 is a prime.

It is a super-2 number, since 2×53135431² = 5646748055111522, 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 = 53135396 and 53135405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53135471) 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, 134665 + ... + 135058.

It is an arithmetic number, because the mean of its divisors is an integer number (13351338).

Almost surely, 2^53135431 is an apocalyptic number.

53135431 is a deficient number, since it is larger than the sum of its proper divisors (269921).

53135431 is a wasteful number, since it uses less digits than its factorization.

53135431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269920.

The product of its digits is 2700, while the sum is 25.

The square root of 53135431 is about 7289.4053941320. The cubic root of 53135431 is about 375.9482514228.

Adding to 53135431 its reverse (13453135), we get a palindrome (66588566).

The spelling of 53135431 in words is "fifty-three million, one hundred thirty-five thousand, four hundred thirty-one".