31478973467 has 8 divisors (see below), whose sum is σ = 32500433280. Its totient is φ = 30457889280.

The previous prime is 31478973451. The next prime is 31478973497. The reversal of 31478973467 is 76437987413.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31478973467 - 2⁴ = 31478973451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31478973497) 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, 81659 + ... + 263867.

It is an arithmetic number, because the mean of its divisors is an integer number (4062554160).

Almost surely, 2^31478973467 is an apocalyptic number.

31478973467 is a deficient number, since it is larger than the sum of its proper divisors (1021459813).

31478973467 is a wasteful number, since it uses less digits than its factorization.

31478973467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187813.

The product of its digits is 21337344, while the sum is 59.

The spelling of 31478973467 in words is "thirty-one billion, four hundred seventy-eight million, nine hundred seventy-three thousand, four hundred sixty-seven".