2500431 has 4 divisors (see below), whose sum is σ = 3333912. Its totient is φ = 1666952.

The previous prime is 2500417. The next prime is 2500439. The reversal of 2500431 is 1340052.

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 2500431 - 2⁹ = 2499919 is a prime.

It is a super-2 number, since 2×2500431² = 12504310371522, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2500431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500439) 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, 416736 + ... + 416741.

It is an arithmetic number, because the mean of its divisors is an integer number (833478).

2^2500431 is an apocalyptic number.

2500431 is a deficient number, since it is larger than the sum of its proper divisors (833481).

2500431 is an equidigital number, since it uses as much as digits as its factorization.

2500431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833480.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2500431 is about 1581.2751183776. The cubic root of 2500431 is about 135.7286798082.

Adding to 2500431 its reverse (1340052), we get a palindrome (3840483).

The spelling of 2500431 in words is "two million, five hundred thousand, four hundred thirty-one".