1438131 has 4 divisors (see below), whose sum is σ = 1917512. Its totient is φ = 958752.

The previous prime is 1438123. The next prime is 1438159. The reversal of 1438131 is 1318341.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1438131 - 2³ = 1438123 is a prime.

It is a super-2 number, since 2×1438131² = 4136441546322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1438098 and 1438107.

It is not an unprimeable number, because it can be changed into a prime (1438181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239686 + ... + 239691.

It is an arithmetic number, because the mean of its divisors is an integer number (479378).

2^1438131 is an apocalyptic number.

1438131 is a deficient number, since it is larger than the sum of its proper divisors (479381).

1438131 is an equidigital number, since it uses as much as digits as its factorization.

1438131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479380.

The product of its digits is 288, while the sum is 21.

The square root of 1438131 is about 1199.2209971477. The cubic root of 1438131 is about 112.8754468599.

The spelling of 1438131 in words is "one million, four hundred thirty-eight thousand, one hundred thirty-one".