1394831371 has 2 divisors, whose sum is σ = 1394831372. Its totient is φ = 1394831370.

The previous prime is 1394831359. The next prime is 1394831381. The reversal of 1394831371 is 1731384931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1394831371 is a prime.

It is not a weakly prime, because it can be changed into another prime (1394831341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697415685 + 697415686.

It is an arithmetic number, because the mean of its divisors is an integer number (697415686).

Almost surely, 2^1394831371 is an apocalyptic number.

1394831371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1394831371 is an equidigital number, since it uses as much as digits as its factorization.

1394831371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 1394831371 is about 37347.4412912049. The cubic root of 1394831371 is about 1117.3105567657.

The spelling of 1394831371 in words is "one billion, three hundred ninety-four million, eight hundred thirty-one thousand, three hundred seventy-one".