53143121231 has 4 divisors (see below), whose sum is σ = 53155146264. Its totient is φ = 53131096200.

The previous prime is 53143121219. The next prime is 53143121243. The reversal of 53143121231 is 13212134135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13212134135 = 5 ⋅2642426827.

It is an interprime number because it is at equal distance from previous prime (53143121219) and next prime (53143121243).

It is a cyclic number.

It is not a de Polignac number, because 53143121231 - 2³⁴ = 35963252047 is a prime.

It is a super-2 number, since 2×53143121231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53143121231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53143121131) 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, 6005885 + ... + 6014726.

It is an arithmetic number, because the mean of its divisors is an integer number (13288786566).

Almost surely, 2^53143121231 is an apocalyptic number.

53143121231 is a deficient number, since it is larger than the sum of its proper divisors (12025033).

53143121231 is a wasteful number, since it uses less digits than its factorization.

53143121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12025032.

The product of its digits is 2160, while the sum is 26.

Adding to 53143121231 its reverse (13212134135), we get a palindrome (66355255366).

The spelling of 53143121231 in words is "fifty-three billion, one hundred forty-three million, one hundred twenty-one thousand, two hundred thirty-one".