5431137641 has 4 divisors (see below), whose sum is σ = 5432032212. Its totient is φ = 5430243072.

The previous prime is 5431137599. The next prime is 5431137667. The reversal of 5431137641 is 1467311345.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1467311345 = 5 ⋅293462269.

It can be written as a sum of positive squares in 2 ways, for example, as 914760025 + 4516377616 = 30245^2 + 67204^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5431137641 is a prime.

It is a super-3 number, since 3×5431137641³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5431197641) 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, 438116 + ... + 450341.

It is an arithmetic number, because the mean of its divisors is an integer number (1358008053).

Almost surely, 2^5431137641 is an apocalyptic number.

It is an amenable number.

5431137641 is a deficient number, since it is larger than the sum of its proper divisors (894571).

5431137641 is an equidigital number, since it uses as much as digits as its factorization.

5431137641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894570.

The product of its digits is 30240, while the sum is 35.

The square root of 5431137641 is about 73696.2525573723. The cubic root of 5431137641 is about 1757.7762938066.

Adding to 5431137641 its reverse (1467311345), we get a palindrome (6898448986).

The spelling of 5431137641 in words is "five billion, four hundred thirty-one million, one hundred thirty-seven thousand, six hundred forty-one".