2091097311 has 16 divisors (see below), whose sum is σ = 2815950720. Its totient is φ = 1380175200.

The previous prime is 2091097303. The next prime is 2091097319. The reversal of 2091097311 is 1137901902.

It is an interprime number because it is at equal distance from previous prime (2091097303) and next prime (2091097319).

It is not a de Polignac number, because 2091097311 - 2³ = 2091097303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091097319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 732036 + ... + 734886.

It is an arithmetic number, because the mean of its divisors is an integer number (175996920).

Almost surely, 2^2091097311 is an apocalyptic number.

2091097311 is a deficient number, since it is larger than the sum of its proper divisors (724853409).

2091097311 is a wasteful number, since it uses less digits than its factorization.

2091097311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5206.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 2091097311 is about 45728.5174808893. The cubic root of 2091097311 is about 1278.7669829923.

The spelling of 2091097311 in words is "two billion, ninety-one million, ninety-seven thousand, three hundred eleven".