31677109 has 8 divisors (see below), whose sum is σ = 32242392. Its totient is φ = 31115520.

The previous prime is 31677101. The next prime is 31677119. The reversal of 31677109 is 90177613.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12096484 + 19580625 = 3478^2 + 4425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31677109 - 2³ = 31677101 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 (31677101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20649 + ... + 22129.

It is an arithmetic number, because the mean of its divisors is an integer number (4030299).

Almost surely, 2^31677109 is an apocalyptic number.

It is an amenable number.

31677109 is a deficient number, since it is larger than the sum of its proper divisors (565283).

31677109 is a wasteful number, since it uses less digits than its factorization.

31677109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 31677109 is about 5628.2420878992. The cubic root of 31677109 is about 316.4087703871.

The spelling of 31677109 in words is "thirty-one million, six hundred seventy-seven thousand, one hundred nine".