1375391723 has 2 divisors, whose sum is σ = 1375391724. Its totient is φ = 1375391722.

The previous prime is 1375391687. The next prime is 1375391761. The reversal of 1375391723 is 3271935731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1375391723 - 2¹⁰ = 1375390699 is a prime.

It is not a weakly prime, because it can be changed into another prime (1375361723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687695861 + 687695862.

It is an arithmetic number, because the mean of its divisors is an integer number (687695862).

Almost surely, 2^1375391723 is an apocalyptic number.

1375391723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375391723 is an equidigital number, since it uses as much as digits as its factorization.

1375391723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119070, while the sum is 41.

The square root of 1375391723 is about 37086.2740511904. The cubic root of 1375391723 is about 1112.0956333375.

The spelling of 1375391723 in words is "one billion, three hundred seventy-five million, three hundred ninety-one thousand, seven hundred twenty-three".