1338531 has 16 divisors (see below), whose sum is σ = 1962240. Its totient is φ = 807840.

The previous prime is 1338521. The next prime is 1338539. The reversal of 1338531 is 1358331.

It is not a de Polignac number, because 1338531 - 2⁵ = 1338499 is a prime.

It is a super-2 number, since 2×1338531² = 3583330475922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1338539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 801 + ... + 1821.

It is an arithmetic number, because the mean of its divisors is an integer number (122640).

2^1338531 is an apocalyptic number.

1338531 is a deficient number, since it is larger than the sum of its proper divisors (623709).

1338531 is a wasteful number, since it uses less digits than its factorization.

1338531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066.

The product of its digits is 1080, while the sum is 24.

The square root of 1338531 is about 1156.9490049263. The cubic root of 1338531 is about 110.2070754996.

The spelling of 1338531 in words is "one million, three hundred thirty-eight thousand, five hundred thirty-one".