1208531 has 8 divisors (see below), whose sum is σ = 1258560. Its totient is φ = 1159488.

The previous prime is 1208521. The next prime is 1208561. The reversal of 1208531 is 1358021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1208531 is a prime.

It is a super-2 number, since 2×1208531² = 2921094355922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1208521) 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, 3110 + ... + 3476.

It is an arithmetic number, because the mean of its divisors is an integer number (157320).

2^1208531 is an apocalyptic number.

1208531 is a deficient number, since it is larger than the sum of its proper divisors (50029).

1208531 is an equidigital number, since it uses as much as digits as its factorization.

1208531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1208531 is about 1099.3320699407. The cubic root of 1208531 is about 106.5170830818.

The spelling of 1208531 in words is "one million, two hundred eight thousand, five hundred thirty-one".