54213321431 has 4 divisors (see below), whose sum is σ = 55474096392. Its totient is φ = 52952546472.

The previous prime is 54213321391. The next prime is 54213321443. The reversal of 54213321431 is 13412331245.

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 54213321431 - 2²² = 54209127127 is a prime.

It is a super-2 number, since 2×54213321431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54213321394 and 54213321403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54213321731) 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, 630387416 + ... + 630387501.

It is an arithmetic number, because the mean of its divisors is an integer number (13868524098).

Almost surely, 2^54213321431 is an apocalyptic number.

54213321431 is a deficient number, since it is larger than the sum of its proper divisors (1260774961).

54213321431 is a wasteful number, since it uses less digits than its factorization.

54213321431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260774960.

The product of its digits is 8640, while the sum is 29.

Adding to 54213321431 its reverse (13412331245), we get a palindrome (67625652676).

The spelling of 54213321431 in words is "fifty-four billion, two hundred thirteen million, three hundred twenty-one thousand, four hundred thirty-one".