5431501243 has 4 divisors (see below), whose sum is σ = 6207430000. Its totient is φ = 4655572488.

The previous prime is 5431501181. The next prime is 5431501249. The reversal of 5431501243 is 3421051345.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-5431501243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5431501249) 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, 387964368 + ... + 387964381.

It is an arithmetic number, because the mean of its divisors is an integer number (1551857500).

Almost surely, 2^5431501243 is an apocalyptic number.

5431501243 is a deficient number, since it is larger than the sum of its proper divisors (775928757).

5431501243 is an equidigital number, since it uses as much as digits as its factorization.

5431501243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775928756.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 5431501243 is about 73698.7194122123. The cubic root of 5431501243 is about 1757.8155192726.

Adding to 5431501243 its reverse (3421051345), we get a palindrome (8852552588).

The spelling of 5431501243 in words is "five billion, four hundred thirty-one million, five hundred one thousand, two hundred forty-three".