1311421049 has 8 divisors (see below), whose sum is σ = 1332702720. Its totient is φ = 1290217600.

The previous prime is 1311421043. The next prime is 1311421063. The reversal of 1311421049 is 9401241131.

It is a happy number.

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-1311421049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311421043) 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, 14729 + ... + 53289.

It is an arithmetic number, because the mean of its divisors is an integer number (166587840).

Almost surely, 2^1311421049 is an apocalyptic number.

It is an amenable number.

1311421049 is a deficient number, since it is larger than the sum of its proper divisors (21281671).

1311421049 is an equidigital number, since it uses as much as digits as its factorization.

1311421049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39111.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1311421049 is about 36213.5478654053. The cubic root of 1311421049 is about 1094.5796845296.

The spelling of 1311421049 in words is "one billion, three hundred eleven million, four hundred twenty-one thousand, forty-nine".