6477731431 has 48 divisors (see below), whose sum is σ = 7259890176. Its totient is φ = 5771703168.

The previous prime is 6477731369. The next prime is 6477731483. The reversal of 6477731431 is 1341377746.

It is not a de Polignac number, because 6477731431 - 2¹¹ = 6477729383 is a prime.

It is a super-2 number, since 2×6477731431² = 83922008984330615522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6477731231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78044916 + ... + 78044998.

It is an arithmetic number, because the mean of its divisors is an integer number (151247712).

Almost surely, 2^6477731431 is an apocalyptic number.

6477731431 is a deficient number, since it is larger than the sum of its proper divisors (782158745).

6477731431 is a wasteful number, since it uses less digits than its factorization.

6477731431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 269 counting only the distinct ones).

The product of its digits is 296352, while the sum is 43.

The square root of 6477731431 is about 80484.3551940376. The cubic root of 6477731431 is about 1864.1219173351.

The spelling of 6477731431 in words is "six billion, four hundred seventy-seven million, seven hundred thirty-one thousand, four hundred thirty-one".