1371431397 has 16 divisors (see below), whose sum is σ = 2094922880. Its totient is φ = 781754112.

The previous prime is 1371431357. The next prime is 1371431417. The reversal of 1371431397 is 7931341731.

It is not a de Polignac number, because 1371431397 - 2¹⁵ = 1371398629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371431357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71248 + ... + 88425.

It is an arithmetic number, because the mean of its divisors is an integer number (130932680).

Almost surely, 2^1371431397 is an apocalyptic number.

It is an amenable number.

1371431397 is a deficient number, since it is larger than the sum of its proper divisors (723491483).

1371431397 is a wasteful number, since it uses less digits than its factorization.

1371431397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160092.

The product of its digits is 47628, while the sum is 39.

The square root of 1371431397 is about 37032.8421404569. The cubic root of 1371431397 is about 1111.0272115957.

The spelling of 1371431397 in words is "one billion, three hundred seventy-one million, four hundred thirty-one thousand, three hundred ninety-seven".