21470117331 has 8 divisors (see below), whose sum is σ = 30828886480. Its totient is φ = 13212379872.

The previous prime is 21470117327. The next prime is 21470117369. The reversal of 21470117331 is 13371107412.

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

It is not a de Polignac number, because 21470117331 - 2² = 21470117327 is a prime.

It is a super-2 number, since 2×21470117331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21470117311) 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, 275257876 + ... + 275257953.

It is an arithmetic number, because the mean of its divisors is an integer number (3853610810).

Almost surely, 2^21470117331 is an apocalyptic number.

21470117331 is a deficient number, since it is larger than the sum of its proper divisors (9358769149).

21470117331 is a wasteful number, since it uses less digits than its factorization.

21470117331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550515845.

The product of its (nonzero) digits is 3528, while the sum is 30.

The spelling of 21470117331 in words is "twenty-one billion, four hundred seventy million, one hundred seventeen thousand, three hundred thirty-one".