231734897 has 2 divisors, whose sum is σ = 231734898. Its totient is φ = 231734896.

The previous prime is 231734891. The next prime is 231734917. The reversal of 231734897 is 798437132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223532401 + 8202496 = 14951^2 + 2864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231734897 is a prime.

It is a super-3 number, since 3×231734897³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231734891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115867448 + 115867449.

It is an arithmetic number, because the mean of its divisors is an integer number (115867449).

Almost surely, 2^231734897 is an apocalyptic number.

It is an amenable number.

231734897 is a deficient number, since it is larger than the sum of its proper divisors (1).

231734897 is an equidigital number, since it uses as much as digits as its factorization.

231734897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 44.

The square root of 231734897 is about 15222.8412919534. The cubic root of 231734897 is about 614.2292298394.

The spelling of 231734897 in words is "two hundred thirty-one million, seven hundred thirty-four thousand, eight hundred ninety-seven".