1320023377 has 2 divisors, whose sum is σ = 1320023378. Its totient is φ = 1320023376.

The previous prime is 1320023281. The next prime is 1320023381. The reversal of 1320023377 is 7733200231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1313627536 + 6395841 = 36244^2 + 2529^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320023377 - 2¹⁹ = 1319499089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320023477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660011688 + 660011689.

It is an arithmetic number, because the mean of its divisors is an integer number (660011689).

Almost surely, 2^1320023377 is an apocalyptic number.

It is an amenable number.

1320023377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320023377 is an equidigital number, since it uses as much as digits as its factorization.

1320023377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 1320023377 is about 36332.1259631197. The cubic root of 1320023377 is about 1096.9677861212.

The spelling of 1320023377 in words is "one billion, three hundred twenty million, twenty-three thousand, three hundred seventy-seven".