2573657431 has 4 divisors (see below), whose sum is σ = 2579240664. Its totient is φ = 2568074200.

The previous prime is 2573657423. The next prime is 2573657441. The reversal of 2573657431 is 1347563752.

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

It is a cyclic number.

It is not a de Polignac number, because 2573657431 - 2³ = 2573657423 is a prime.

It is a super-2 number, since 2×2573657431² = 13247425144283039522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2573657441) 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, 2790925 + ... + 2791846.

It is an arithmetic number, because the mean of its divisors is an integer number (644810166).

Almost surely, 2^2573657431 is an apocalyptic number.

2573657431 is a deficient number, since it is larger than the sum of its proper divisors (5583233).

2573657431 is an equidigital number, since it uses as much as digits as its factorization.

2573657431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5583232.

The product of its digits is 529200, while the sum is 43.

The square root of 2573657431 is about 50731.2273752568. The cubic root of 2573657431 is about 1370.4091397050.

The spelling of 2573657431 in words is "two billion, five hundred seventy-three million, six hundred fifty-seven thousand, four hundred thirty-one".