1231332079 has 2 divisors, whose sum is σ = 1231332080. Its totient is φ = 1231332078.

The previous prime is 1231332077. The next prime is 1231332119. The reversal of 1231332079 is 9702331321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1231332079 - 2¹ = 1231332077 is a prime.

Together with 1231332077, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1231332079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231332077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615666039 + 615666040.

It is an arithmetic number, because the mean of its divisors is an integer number (615666040).

Almost surely, 2^1231332079 is an apocalyptic number.

1231332079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231332079 is an equidigital number, since it uses as much as digits as its factorization.

1231332079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 1231332079 is about 35090.3416768774. The cubic root of 1231332079 is about 1071.8279172501.

The spelling of 1231332079 in words is "one billion, two hundred thirty-one million, three hundred thirty-two thousand, seventy-nine".