6977391431 has 16 divisors (see below), whose sum is σ = 7254745344. Its totient is φ = 6705936384.

The previous prime is 6977391403. The next prime is 6977391437. The reversal of 6977391431 is 1341937796.

It is a cyclic number.

It is not a de Polignac number, because 6977391431 - 2⁶ = 6977391367 is a prime.

It is a super-2 number, since 2×6977391431² = 97367982362784455522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6977391431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6977391437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 913430 + ... + 921036.

It is an arithmetic number, because the mean of its divisors is an integer number (453421584).

Almost surely, 2^6977391431 is an apocalyptic number.

6977391431 is a deficient number, since it is larger than the sum of its proper divisors (277353913).

6977391431 is a wasteful number, since it uses less digits than its factorization.

6977391431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7990.

The product of its digits is 857304, while the sum is 50.

The square root of 6977391431 is about 83530.7813383785. The cubic root of 6977391431 is about 1910.8695026875.

The spelling of 6977391431 in words is "six billion, nine hundred seventy-seven million, three hundred ninety-one thousand, four hundred thirty-one".