1171689313 has 4 divisors (see below), whose sum is σ = 1173385648. Its totient is φ = 1169992980.

The previous prime is 1171689307. The next prime is 1171689331. The reversal of 1171689313 is 3139861711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3139861711 = 7 ⋅448551673.

It is a cyclic number.

It is not a de Polignac number, because 1171689313 - 2²¹ = 1169592161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1171689913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847131 + ... + 848512.

It is an arithmetic number, because the mean of its divisors is an integer number (293346412).

Almost surely, 2^1171689313 is an apocalyptic number.

It is an amenable number.

1171689313 is a deficient number, since it is larger than the sum of its proper divisors (1696335).

1171689313 is an equidigital number, since it uses as much as digits as its factorization.

1171689313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696334.

The product of its digits is 27216, while the sum is 40.

The square root of 1171689313 is about 34229.9476044004. The cubic root of 1171689313 is about 1054.2351435369.

The spelling of 1171689313 in words is "one billion, one hundred seventy-one million, six hundred eighty-nine thousand, three hundred thirteen".