8541497431 has 2 divisors, whose sum is σ = 8541497432. Its totient is φ = 8541497430.

The previous prime is 8541497423. The next prime is 8541497441. The reversal of 8541497431 is 1347941458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8541497431 - 2³ = 8541497423 is a prime.

It is a super-2 number, since 2×8541497431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8541497441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4270748715 + 4270748716.

It is an arithmetic number, because the mean of its divisors is an integer number (4270748716).

Almost surely, 2^8541497431 is an apocalyptic number.

8541497431 is a deficient number, since it is larger than the sum of its proper divisors (1).

8541497431 is an equidigital number, since it uses as much as digits as its factorization.

8541497431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 46.

The square root of 8541497431 is about 92420.2219809063. The cubic root of 8541497431 is about 2044.1433021053.

The spelling of 8541497431 in words is "eight billion, five hundred forty-one million, four hundred ninety-seven thousand, four hundred thirty-one".