1315771000 has 32 divisors (see below), whose sum is σ = 3078906480. Its totient is φ = 526308000.

The previous prime is 1315770971. The next prime is 1315771001. The reversal of 1315771000 is 1775131.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315771001) 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, 656886 + ... + 658885.

Almost surely, 2^1315771000 is an apocalyptic number.

1315771000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315771000 is an abundant number, since it is smaller than the sum of its proper divisors (1763135480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1315771000 is a wasteful number, since it uses less digits than its factorization.

1315771000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315792 (or 1315778 counting only the distinct ones).

The product of its (nonzero) digits is 735, while the sum is 25.

The square root of 1315771000 is about 36273.5578624430. The cubic root of 1315771000 is about 1095.7885800836.

The spelling of 1315771000 in words is "one billion, three hundred fifteen million, seven hundred seventy-one thousand".