2231615207 has 2 divisors, whose sum is σ = 2231615208. Its totient is φ = 2231615206.

The previous prime is 2231615173. The next prime is 2231615213. The reversal of 2231615207 is 7025161322.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2231615207 - 2¹² = 2231611111 is a prime.

It is a super-3 number, since 3×2231615207³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 2231615207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231615257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115807603 + 1115807604.

It is an arithmetic number, because the mean of its divisors is an integer number (1115807604).

Almost surely, 2^2231615207 is an apocalyptic number.

2231615207 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231615207 is an equidigital number, since it uses as much as digits as its factorization.

2231615207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 2231615207 is about 47239.9746718814. The cubic root of 2231615207 is about 1306.7919105519.

Adding to 2231615207 its reverse (7025161322), we get a palindrome (9256776529).

The spelling of 2231615207 in words is "two billion, two hundred thirty-one million, six hundred fifteen thousand, two hundred seven".