31469117947 has 8 divisors (see below), whose sum is σ = 33175406592. Its totient is φ = 29806026600.

The previous prime is 31469117921. The next prime is 31469117959. The reversal of 31469117947 is 74971196413.

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-31469117947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31469117894 and 31469117903.

It is not an unprimeable number, because it can be changed into a prime (31469117047) 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, 10797829 + ... + 10800742.

It is an arithmetic number, because the mean of its divisors is an integer number (4146925824).

Almost surely, 2^31469117947 is an apocalyptic number.

31469117947 is a deficient number, since it is larger than the sum of its proper divisors (1706288645).

31469117947 is a wasteful number, since it uses less digits than its factorization.

31469117947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21598649.

The product of its digits is 1143072, while the sum is 52.

The spelling of 31469117947 in words is "thirty-one billion, four hundred sixty-nine million, one hundred seventeen thousand, nine hundred forty-seven".