11431590 has 32 divisors (see below), whose sum is σ = 27772416. Its totient is φ = 3011040.

The previous prime is 11431573. The next prime is 11431601. The reversal of 11431590 is 9513411.

It is a self number, because there is not a number n which added to its sum of digits gives 11431590.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195 + ... + 4785.

It is an arithmetic number, because the mean of its divisors is an integer number (867888).

Almost surely, 2^11431590 is an apocalyptic number.

11431590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11431590 is an abundant number, since it is smaller than the sum of its proper divisors (16340826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11431590 is a wasteful number, since it uses less digits than its factorization.

11431590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 11431590 is about 3381.0634421732. The cubic root of 11431590 is about 225.2694056911.

It can be divided in two parts, 11431 and 590, that added together give a palindrome (12021).

The spelling of 11431590 in words is "eleven million, four hundred thirty-one thousand, five hundred ninety".