1315921071 has 16 divisors (see below), whose sum is σ = 1782144000. Its totient is φ = 863510208.

The previous prime is 1315921067. The next prime is 1315921111. The reversal of 1315921071 is 1701295131.

It is not a de Polignac number, because 1315921071 - 2² = 1315921067 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315921001) 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, 480835 + ... + 483563.

It is an arithmetic number, because the mean of its divisors is an integer number (111384000).

Almost surely, 2^1315921071 is an apocalyptic number.

1315921071 is a deficient number, since it is larger than the sum of its proper divisors (466222929).

1315921071 is a wasteful number, since it uses less digits than its factorization.

1315921071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5198.

The product of its (nonzero) digits is 1890, while the sum is 30.

The square root of 1315921071 is about 36275.6264039644. The cubic root of 1315921071 is about 1095.8302387604.

The spelling of 1315921071 in words is "one billion, three hundred fifteen million, nine hundred twenty-one thousand, seventy-one".