2231668973 has 2 divisors, whose sum is σ = 2231668974. Its totient is φ = 2231668972.

The previous prime is 2231668963. The next prime is 2231669051. The reversal of 2231668973 is 3798661322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2224254244 + 7414729 = 47162^2 + 2723^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231668973 - 2¹⁸ = 2231406829 is a prime.

It is a super-3 number, since 3×2231668973³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231668903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115834486 + 1115834487.

It is an arithmetic number, because the mean of its divisors is an integer number (1115834487).

Almost surely, 2^2231668973 is an apocalyptic number.

It is an amenable number.

2231668973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231668973 is an equidigital number, since it uses as much as digits as its factorization.

2231668973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The square root of 2231668973 is about 47240.5437415786. The cubic root of 2231668973 is about 1306.8024052538.

The spelling of 2231668973 in words is "two billion, two hundred thirty-one million, six hundred sixty-eight thousand, nine hundred seventy-three".