972227231 has 2 divisors, whose sum is σ = 972227232. Its totient is φ = 972227230.

The previous prime is 972227129. The next prime is 972227237. The reversal of 972227231 is 132722279.

It is a strong prime.

It is an emirp because it is prime and its reverse (132722279) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 972227231 - 2¹⁰ = 972226207 is a prime.

It is a super-2 number, since 2×972227231² = 1890451577395854722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 972227191 and 972227200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972227237) 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, 486113615 + 486113616.

It is an arithmetic number, because the mean of its divisors is an integer number (486113616).

Almost surely, 2^972227231 is an apocalyptic number.

972227231 is a deficient number, since it is larger than the sum of its proper divisors (1).

972227231 is an equidigital number, since it uses as much as digits as its factorization.

972227231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 972227231 is about 31180.5585421429. The cubic root of 972227231 is about 990.6553600357.

The spelling of 972227231 in words is "nine hundred seventy-two million, two hundred twenty-seven thousand, two hundred thirty-one".