1307923 has 2 divisors, whose sum is σ = 1307924. Its totient is φ = 1307922.

The previous prime is 1307909. The next prime is 1307927. The reversal of 1307923 is 3297031.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1307923 is a prime.

1307923 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1307927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653961 + 653962.

It is an arithmetic number, because the mean of its divisors is an integer number (653962).

2^1307923 is an apocalyptic number.

1307923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1307923 is an equidigital number, since it uses as much as digits as its factorization.

1307923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 1307923 is about 1143.6446126310. The cubic root of 1307923 is about 109.3605600529.

The spelling of 1307923 in words is "one million, three hundred seven thousand, nine hundred twenty-three".