53731131 has 4 divisors (see below), whose sum is σ = 71641512. Its totient is φ = 35820752.

The previous prime is 53731109. The next prime is 53731177. The reversal of 53731131 is 13113735.

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 53731131 - 2⁷ = 53731003 is a prime.

It is a super-2 number, since 2×53731131² = 5774068877078322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53731231) 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, 8955186 + ... + 8955191.

It is an arithmetic number, because the mean of its divisors is an integer number (17910378).

Almost surely, 2^53731131 is an apocalyptic number.

53731131 is a deficient number, since it is larger than the sum of its proper divisors (17910381).

53731131 is a wasteful number, since it uses less digits than its factorization.

53731131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17910380.

The product of its digits is 945, while the sum is 24.

The square root of 53731131 is about 7330.1521812306. The cubic root of 53731131 is about 377.3479492321.

Adding to 53731131 its reverse (13113735), we get a palindrome (66844866).

The spelling of 53731131 in words is "fifty-three million, seven hundred thirty-one thousand, one hundred thirty-one".