11431621 has 8 divisors (see below), whose sum is σ = 11962944. Its totient is φ = 10903200.

The previous prime is 11431619. The next prime is 11431627. The reversal of 11431621 is 12613411.

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

It is a cyclic number.

It is not a de Polignac number, because 11431621 - 2¹ = 11431619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13410 + ... + 14236.

It is an arithmetic number, because the mean of its divisors is an integer number (1495368).

Almost surely, 2^11431621 is an apocalyptic number.

It is an amenable number.

11431621 is a deficient number, since it is larger than the sum of its proper divisors (531323).

11431621 is an equidigital number, since it uses as much as digits as its factorization.

11431621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451.

The product of its digits is 144, while the sum is 19.

The square root of 11431621 is about 3381.0680265265. The cubic root of 11431621 is about 225.2696093182.

The spelling of 11431621 in words is "eleven million, four hundred thirty-one thousand, six hundred twenty-one".