2117731077 has 48 divisors (see below), whose sum is σ = 3821695488. Its totient is φ = 1097828640.

The previous prime is 2117731039. The next prime is 2117731111. The reversal of 2117731077 is 7701377112.

It is not a de Polignac number, because 2117731077 - 2⁸ = 2117730821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117731277) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 359518 + ... + 365360.

It is an arithmetic number, because the mean of its divisors is an integer number (79618656).

Almost surely, 2^2117731077 is an apocalyptic number.

It is an amenable number.

2117731077 is a deficient number, since it is larger than the sum of its proper divisors (1703964411).

2117731077 is a wasteful number, since it uses less digits than its factorization.

2117731077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6390 (or 6387 counting only the distinct ones).

The product of its (nonzero) digits is 14406, while the sum is 36.

The square root of 2117731077 is about 46018.8122076179. The cubic root of 2117731077 is about 1284.1732031904.

The spelling of 2117731077 in words is "two billion, one hundred seventeen million, seven hundred thirty-one thousand, seventy-seven".