53542321431 has 4 divisors (see below), whose sum is σ = 71389761912. Its totient is φ = 35694880952.

The previous prime is 53542321409. The next prime is 53542321471. The reversal of 53542321431 is 13412324535.

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 53542321431 - 2²² = 53538127127 is a prime.

It is a super-2 number, since 2×53542321431² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53542321392 and 53542321401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53542321471) 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, 8923720236 + ... + 8923720241.

It is an arithmetic number, because the mean of its divisors is an integer number (17847440478).

Almost surely, 2^53542321431 is an apocalyptic number.

53542321431 is a deficient number, since it is larger than the sum of its proper divisors (17847440481).

53542321431 is a wasteful number, since it uses less digits than its factorization.

53542321431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17847440480.

The product of its digits is 43200, while the sum is 33.

Adding to 53542321431 its reverse (13412324535), we get a palindrome (66954645966).

The spelling of 53542321431 in words is "fifty-three billion, five hundred forty-two million, three hundred twenty-one thousand, four hundred thirty-one".