2543971431 has 8 divisors (see below), whose sum is σ = 3393266544. Its totient is φ = 1695328640.

The previous prime is 2543971387. The next prime is 2543971439. The reversal of 2543971431 is 1341793452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2543971431 - 2¹⁴ = 2543955047 is a prime.

It is a super-2 number, since 2×2543971431² = 12943581283488375522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2543971431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543971439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153906 + ... + 169631.

It is an arithmetic number, because the mean of its divisors is an integer number (424158318).

Almost surely, 2^2543971431 is an apocalyptic number.

2543971431 is a deficient number, since it is larger than the sum of its proper divisors (849295113).

2543971431 is a wasteful number, since it uses less digits than its factorization.

2543971431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326161.

The product of its digits is 90720, while the sum is 39.

The square root of 2543971431 is about 50437.7976422445. The cubic root of 2543971431 is about 1365.1197291964.

The spelling of 2543971431 in words is "two billion, five hundred forty-three million, nine hundred seventy-one thousand, four hundred thirty-one".