1320972623 has 2 divisors, whose sum is σ = 1320972624. Its totient is φ = 1320972622.

The previous prime is 1320972619. The next prime is 1320972643. The reversal of 1320972623 is 3262790231.

It is a weak prime.

It is an emirp because it is prime and its reverse (3262790231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1320972623 - 2² = 1320972619 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320972643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660486311 + 660486312.

It is an arithmetic number, because the mean of its divisors is an integer number (660486312).

Almost surely, 2^1320972623 is an apocalyptic number.

1320972623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320972623 is an equidigital number, since it uses as much as digits as its factorization.

1320972623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 1320972623 is about 36345.1870678911. The cubic root of 1320972623 is about 1097.2306710565.

The spelling of 1320972623 in words is "one billion, three hundred twenty million, nine hundred seventy-two thousand, six hundred twenty-three".