31671445137 has 8 divisors (see below), whose sum is σ = 42229985760. Its totient is φ = 21113600640.

The previous prime is 31671445133. The next prime is 31671445139. The reversal of 31671445137 is 73154417613.

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

It is not a de Polignac number, because 31671445137 - 2² = 31671445133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31671445133) 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, 56539 + ... + 257952.

It is an arithmetic number, because the mean of its divisors is an integer number (5278748220).

Almost surely, 2^31671445137 is an apocalyptic number.

It is an amenable number.

31671445137 is a deficient number, since it is larger than the sum of its proper divisors (10558540623).

31671445137 is a wasteful number, since it uses less digits than its factorization.

31671445137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348063.

The product of its digits is 211680, while the sum is 42.

The spelling of 31671445137 in words is "thirty-one billion, six hundred seventy-one million, four hundred forty-five thousand, one hundred thirty-seven".