31681671463 has 8 divisors (see below), whose sum is σ = 34120127888. Its totient is φ = 29243415744.

The previous prime is 31681671457. The next prime is 31681671473. The reversal of 31681671463 is 36417618613.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31681671463 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 (31681671403) 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, 506395 + ... + 565507.

It is an arithmetic number, because the mean of its divisors is an integer number (4265015986).

Almost surely, 2^31681671463 is an apocalyptic number.

31681671463 is a deficient number, since it is larger than the sum of its proper divisors (2438456425).

31681671463 is a wasteful number, since it uses less digits than its factorization.

31681671463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100353.

The product of its digits is 435456, while the sum is 46.

The spelling of 31681671463 in words is "thirty-one billion, six hundred eighty-one million, six hundred seventy-one thousand, four hundred sixty-three".