2191393313 has 8 divisors (see below), whose sum is σ = 2322097632. Its totient is φ = 2060888896.

The previous prime is 2191393301. The next prime is 2191393319. The reversal of 2191393313 is 3133931912.

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 2191393313 - 2¹² = 2191389217 is a prime.

It is a super-2 number, since 2×2191393313² = 9604409304522231938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2191393319) 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, 27095 + ... + 71532.

It is an arithmetic number, because the mean of its divisors is an integer number (290262204).

Almost surely, 2^2191393313 is an apocalyptic number.

It is an amenable number.

2191393313 is a deficient number, since it is larger than the sum of its proper divisors (130704319).

2191393313 is a wasteful number, since it uses less digits than its factorization.

2191393313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99951.

The product of its digits is 13122, while the sum is 35.

The square root of 2191393313 is about 46812.3200984527. The cubic root of 2191393313 is about 1298.8932025352.

The spelling of 2191393313 in words is "two billion, one hundred ninety-one million, three hundred ninety-three thousand, three hundred thirteen".