331835897 has 2 divisors, whose sum is σ = 331835898. Its totient is φ = 331835896.

The previous prime is 331835891. The next prime is 331835899. The reversal of 331835897 is 798538133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286421776 + 45414121 = 16924^2 + 6739^2 .

It is an emirp because it is prime and its reverse (798538133) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331835897 is a prime.

It is a super-2 number, since 2×331835897² = 220230125075589218, which contains 22 as substring.

Together with 331835899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (331835891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165917948 + 165917949.

It is an arithmetic number, because the mean of its divisors is an integer number (165917949).

Almost surely, 2^331835897 is an apocalyptic number.

It is an amenable number.

331835897 is a deficient number, since it is larger than the sum of its proper divisors (1).

331835897 is an equidigital number, since it uses as much as digits as its factorization.

331835897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 47.

The square root of 331835897 is about 18216.3634405992. The cubic root of 331835897 is about 692.3214513597.

The spelling of 331835897 in words is "three hundred thirty-one million, eight hundred thirty-five thousand, eight hundred ninety-seven".