1311960473 has 4 divisors (see below), whose sum is σ = 1318829568. Its totient is φ = 1305091380.

The previous prime is 1311960443. The next prime is 1311960527. The reversal of 1311960473 is 3740691131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1311960473 - 2⁶ = 1311960409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311960413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3434261 + ... + 3434642.

It is an arithmetic number, because the mean of its divisors is an integer number (329707392).

Almost surely, 2^1311960473 is an apocalyptic number.

It is an amenable number.

1311960473 is a deficient number, since it is larger than the sum of its proper divisors (6869095).

1311960473 is an equidigital number, since it uses as much as digits as its factorization.

1311960473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6869094.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 1311960473 is about 36220.9949200736. The cubic root of 1311960473 is about 1094.7297409933.

The spelling of 1311960473 in words is "one billion, three hundred eleven million, nine hundred sixty thousand, four hundred seventy-three".