2231110997 has 4 divisors (see below), whose sum is σ = 2231416716. Its totient is φ = 2230805280.

The previous prime is 2231110961. The next prime is 2231111023. The reversal of 2231110997 is 7990111322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2137582756 + 93528241 = 46234^2 + 9671^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231110997 - 2¹⁶ = 2231045461 is a prime.

It is a super-3 number, since 3×2231110997³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231110597) 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, 141638 + ... + 156599.

It is an arithmetic number, because the mean of its divisors is an integer number (557854179).

Almost surely, 2^2231110997 is an apocalyptic number.

It is an amenable number.

2231110997 is a deficient number, since it is larger than the sum of its proper divisors (305719).

2231110997 is an equidigital number, since it uses as much as digits as its factorization.

2231110997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305718.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 2231110997 is about 47234.6376825312. The cubic root of 2231110997 is about 1306.6934845065.

The spelling of 2231110997 in words is "two billion, two hundred thirty-one million, one hundred ten thousand, nine hundred ninety-seven".