972810331 has 2 divisors, whose sum is σ = 972810332. Its totient is φ = 972810330.

The previous prime is 972810299. The next prime is 972810343. The reversal of 972810331 is 133018279.

It is a strong prime.

It is an emirp because it is prime and its reverse (133018279) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 972810331 - 2⁵ = 972810299 is a prime.

It is a super-2 number, since 2×972810331² = 1892719880200659122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (972814331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486405165 + 486405166.

It is an arithmetic number, because the mean of its divisors is an integer number (486405166).

Almost surely, 2^972810331 is an apocalyptic number.

972810331 is a deficient number, since it is larger than the sum of its proper divisors (1).

972810331 is an equidigital number, since it uses as much as digits as its factorization.

972810331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 972810331 is about 31189.9075182983. The cubic root of 972810331 is about 990.8533712541.

The spelling of 972810331 in words is "nine hundred seventy-two million, eight hundred ten thousand, three hundred thirty-one".