2587431 has 32 divisors (see below), whose sum is σ = 4497408. Its totient is φ = 1283040.

The previous prime is 2587423. The next prime is 2587441. The reversal of 2587431 is 1347852.

It is not a de Polignac number, because 2587431 - 2³ = 2587423 is a prime.

It is a super-2 number, since 2×2587431² = 13389598359522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2587411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5070 + ... + 5556.

It is an arithmetic number, because the mean of its divisors is an integer number (140544).

2^2587431 is an apocalyptic number.

2587431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2587431 is a deficient number, since it is larger than the sum of its proper divisors (1909977).

2587431 is a wasteful number, since it uses less digits than its factorization.

2587431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531.

The product of its digits is 6720, while the sum is 30.

The square root of 2587431 is about 1608.5493464610. The cubic root of 2587431 is about 137.2849486815.

The spelling of 2587431 in words is "two million, five hundred eighty-seven thousand, four hundred thirty-one".