31677543 has 12 divisors (see below), whose sum is σ = 46873008. Its totient is φ = 20603040.

The previous prime is 31677521. The next prime is 31677553. The reversal of 31677543 is 34577613.

It is not a de Polignac number, because 31677543 - 2⁶ = 31677479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31677498 and 31677507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31677553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42555 + ... + 43292.

It is an arithmetic number, because the mean of its divisors is an integer number (3906084).

Almost surely, 2^31677543 is an apocalyptic number.

31677543 is a deficient number, since it is larger than the sum of its proper divisors (15195465).

31677543 is a wasteful number, since it uses less digits than its factorization.

31677543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85894 (or 85891 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 31677543 is about 5628.2806433226. The cubic root of 31677543 is about 316.4102153925.

The spelling of 31677543 in words is "thirty-one million, six hundred seventy-seven thousand, five hundred forty-three".