1087431 has 8 divisors (see below), whose sum is σ = 1461504. Its totient is φ = 719160.

The previous prime is 1087423. The next prime is 1087433. The reversal of 1087431 is 1347801.

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

It is not a de Polignac number, because 1087431 - 2³ = 1087423 is a prime.

It is a super-2 number, since 2×1087431² = 2365012359522, which contains 22 as substring.

1087431 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991 + ... + 1776.

It is an arithmetic number, because the mean of its divisors is an integer number (182688).

2^1087431 is an apocalyptic number.

1087431 is a deficient number, since it is larger than the sum of its proper divisors (374073).

1087431 is a wasteful number, since it uses less digits than its factorization.

1087431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2901.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 1087431 is about 1042.7995972381. The cubic root of 1087431 is about 102.8333308525.

The spelling of 1087431 in words is "one million, eighty-seven thousand, four hundred thirty-one".