231061097 has 2 divisors, whose sum is σ = 231061098. Its totient is φ = 231061096.

The previous prime is 231061057. The next prime is 231061141. The reversal of 231061097 is 790160132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136796416 + 94264681 = 11696^2 + 9709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231061097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231061007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115530548 + 115530549.

It is an arithmetic number, because the mean of its divisors is an integer number (115530549).

Almost surely, 2^231061097 is an apocalyptic number.

It is an amenable number.

231061097 is a deficient number, since it is larger than the sum of its proper divisors (1).

231061097 is an equidigital number, since it uses as much as digits as its factorization.

231061097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 231061097 is about 15200.6939644215. The cubic root of 231061097 is about 613.6333342209.

The spelling of 231061097 in words is "two hundred thirty-one million, sixty-one thousand, ninety-seven".