1313437947 has 16 divisors (see below), whose sum is σ = 1860658560. Its totient is φ = 821783232.

The previous prime is 1313437933. The next prime is 1313437949. The reversal of 1313437947 is 7497343131.

It is not a de Polignac number, because 1313437947 - 2⁷ = 1313437819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1313437899 and 1313437908.

It is not an unprimeable number, because it can be changed into a prime (1313437949) 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, 101578 + ... + 113775.

It is an arithmetic number, because the mean of its divisors is an integer number (116291160).

Almost surely, 2^1313437947 is an apocalyptic number.

1313437947 is a deficient number, since it is larger than the sum of its proper divisors (547220613).

1313437947 is a wasteful number, since it uses less digits than its factorization.

1313437947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215482.

The product of its digits is 190512, while the sum is 42.

The square root of 1313437947 is about 36241.3844520322. The cubic root of 1313437947 is about 1095.1405328274.

The spelling of 1313437947 in words is "one billion, three hundred thirteen million, four hundred thirty-seven thousand, nine hundred forty-seven".