1208490331 has 4 divisors (see below), whose sum is σ = 1212376464. Its totient is φ = 1204604200.

The previous prime is 1208490319. The next prime is 1208490341. The reversal of 1208490331 is 1330948021.

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

It is a cyclic number.

It is not a de Polignac number, because 1208490331 - 2⁵ = 1208490299 is a prime.

It is a super-2 number, since 2×1208490331² = 2920897760240979122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1208490293 and 1208490302.

It is not an unprimeable number, because it can be changed into a prime (1208490341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1942600 + ... + 1943221.

It is an arithmetic number, because the mean of its divisors is an integer number (303094116).

Almost surely, 2^1208490331 is an apocalyptic number.

1208490331 is a deficient number, since it is larger than the sum of its proper divisors (3886133).

1208490331 is an equidigital number, since it uses as much as digits as its factorization.

1208490331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3886132.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1208490331 is about 34763.3475229300. The cubic root of 1208490331 is about 1065.1588824506.

The spelling of 1208490331 in words is "one billion, two hundred eight million, four hundred ninety thousand, three hundred thirty-one".