1397132911 has 4 divisors (see below), whose sum is σ = 1416271792. Its totient is φ = 1377994032.

The previous prime is 1397132887. The next prime is 1397132917. The reversal of 1397132911 is 1192317931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1397132911 - 2¹⁷ = 1397001839 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 (1397132917) 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 3 ways as a sum of consecutive naturals, for example, 9569331 + ... + 9569476.

It is an arithmetic number, because the mean of its divisors is an integer number (354067948).

Almost surely, 2^1397132911 is an apocalyptic number.

1397132911 is a deficient number, since it is larger than the sum of its proper divisors (19138881).

1397132911 is an equidigital number, since it uses as much as digits as its factorization.

1397132911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19138880.

The product of its digits is 10206, while the sum is 37.

The square root of 1397132911 is about 37378.2411437456. The cubic root of 1397132911 is about 1117.9247580952.

The spelling of 1397132911 in words is "one billion, three hundred ninety-seven million, one hundred thirty-two thousand, nine hundred eleven".