5143431021 has 4 divisors (see below), whose sum is σ = 6857908032. Its totient is φ = 3428954012.

The previous prime is 5143430993. The next prime is 5143431037. The reversal of 5143431021 is 1201343415.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5143431021 - 2⁵ = 5143430989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5143430982 and 5143431000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5143431071) 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, 857238501 + ... + 857238506.

It is an arithmetic number, because the mean of its divisors is an integer number (1714477008).

Almost surely, 2^5143431021 is an apocalyptic number.

It is an amenable number.

5143431021 is a deficient number, since it is larger than the sum of its proper divisors (1714477011).

5143431021 is a wasteful number, since it uses less digits than its factorization.

5143431021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714477010.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 5143431021 is about 71717.7176226349. The cubic root of 5143431021 is about 1726.1729496118.

Adding to 5143431021 its reverse (1201343415), we get a palindrome (6344774436).

The spelling of 5143431021 in words is "five billion, one hundred forty-three million, four hundred thirty-one thousand, twenty-one".