1315671971 has 8 divisors (see below), whose sum is σ = 1366470000. Its totient is φ = 1265236000.

The previous prime is 1315671953. The next prime is 1315672003. The reversal of 1315671971 is 1791765131.

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-1315671971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315671901) 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, 83096 + ... + 97653.

It is an arithmetic number, because the mean of its divisors is an integer number (170808750).

Almost surely, 2^1315671971 is an apocalyptic number.

1315671971 is a deficient number, since it is larger than the sum of its proper divisors (50798029).

1315671971 is a wasteful number, since it uses less digits than its factorization.

1315671971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181029.

The product of its digits is 39690, while the sum is 41.

The square root of 1315671971 is about 36272.1928066115. The cubic root of 1315671971 is about 1095.7610885800.

The spelling of 1315671971 in words is "one billion, three hundred fifteen million, six hundred seventy-one thousand, nine hundred seventy-one".