6701731391 has 4 divisors (see below), whose sum is σ = 6708764592. Its totient is φ = 6694698192.

The previous prime is 6701731369. The next prime is 6701731411. The reversal of 6701731391 is 1931371076.

It is a happy number.

6701731391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6701731391 - 2⁶ = 6701731327 is a prime.

It is a super-2 number, since 2×6701731391² = 89826407274229589762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6701730391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3515171 + ... + 3517076.

It is an arithmetic number, because the mean of its divisors is an integer number (1677191148).

Almost surely, 2^6701731391 is an apocalyptic number.

6701731391 is a deficient number, since it is larger than the sum of its proper divisors (7033201).

6701731391 is an equidigital number, since it uses as much as digits as its factorization.

6701731391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7033200.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 6701731391 is about 81864.1031893711. The cubic root of 6701731391 is about 1885.3660063185.

The spelling of 6701731391 in words is "six billion, seven hundred one million, seven hundred thirty-one thousand, three hundred ninety-one".