1155697313 has 8 divisors (see below), whose sum is σ = 1160312832. Its totient is φ = 1151090496.

The previous prime is 1155697259. The next prime is 1155697321. The reversal of 1155697313 is 3137965511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1155697313 - 2⁸ = 1155697057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155697373) 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, 397481 + ... + 400377.

It is an arithmetic number, because the mean of its divisors is an integer number (145039104).

Almost surely, 2^1155697313 is an apocalyptic number.

It is an amenable number.

1155697313 is a deficient number, since it is larger than the sum of its proper divisors (4615519).

1155697313 is a wasteful number, since it uses less digits than its factorization.

1155697313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351.

The product of its digits is 85050, while the sum is 41.

The square root of 1155697313 is about 33995.5484291694. The cubic root of 1155697313 is about 1049.4168532150.

The spelling of 1155697313 in words is "one billion, one hundred fifty-five million, six hundred ninety-seven thousand, three hundred thirteen".