231634246661 has 2 divisors, whose sum is σ = 231634246662. Its totient is φ = 231634246660.

The previous prime is 231634246573. The next prime is 231634246681. The reversal of 231634246661 is 166642436132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212866890625 + 18767356036 = 461375^2 + 136994^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231634246661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231634246681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115817123330 + 115817123331.

It is an arithmetic number, because the mean of its divisors is an integer number (115817123331).

Almost surely, 2^231634246661 is an apocalyptic number.

It is an amenable number.

231634246661 is a deficient number, since it is larger than the sum of its proper divisors (1).

231634246661 is an equidigital number, since it uses as much as digits as its factorization.

231634246661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 44.

The spelling of 231634246661 in words is "two hundred thirty-one billion, six hundred thirty-four million, two hundred forty-six thousand, six hundred sixty-one".