1171299313 has 2 divisors, whose sum is σ = 1171299314. Its totient is φ = 1171299312.

The previous prime is 1171299307. The next prime is 1171299331. The reversal of 1171299313 is 3139921711.

Together with next prime (1171299331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 969886449 + 201412864 = 31143^2 + 14192^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1171299313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1171299373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585649656 + 585649657.

It is an arithmetic number, because the mean of its divisors is an integer number (585649657).

Almost surely, 2^1171299313 is an apocalyptic number.

It is an amenable number.

1171299313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171299313 is an equidigital number, since it uses as much as digits as its factorization.

1171299313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206, while the sum is 37.

The square root of 1171299313 is about 34224.2503643250. The cubic root of 1171299313 is about 1054.1181622041.

The spelling of 1171299313 in words is "one billion, one hundred seventy-one million, two hundred ninety-nine thousand, three hundred thirteen".