53111231 has 8 divisors (see below), whose sum is σ = 53813760. Its totient is φ = 52412832.

The previous prime is 53111203. The next prime is 53111237. The reversal of 53111231 is 13211135.

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

It is a cyclic number.

It is not a de Polignac number, because 53111231 - 2²² = 48916927 is a prime.

It is a super-2 number, since 2×53111231² = 5641605716670722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53111237) 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, 31106 + ... + 32768.

It is an arithmetic number, because the mean of its divisors is an integer number (6726720).

Almost surely, 2^53111231 is an apocalyptic number.

53111231 is a deficient number, since it is larger than the sum of its proper divisors (702529).

53111231 is a wasteful number, since it uses less digits than its factorization.

53111231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065.

The product of its digits is 90, while the sum is 17.

The square root of 53111231 is about 7287.7452617391. The cubic root of 53111231 is about 375.8911688005.

Adding to 53111231 its reverse (13211135), we get a palindrome (66322366).

The spelling of 53111231 in words is "fifty-three million, one hundred eleven thousand, two hundred thirty-one".