21700650331 has 8 divisors (see below), whose sum is σ = 23598164160. Its totient is φ = 19872137088.

The previous prime is 21700650319. The next prime is 21700650343. The reversal of 21700650331 is 13305600712.

It is an interprime number because it is at equal distance from previous prime (21700650319) and next prime (21700650343).

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 21700650331 - 2¹¹ = 21700648283 is a prime.

It is a super-2 number, since 2×21700650331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21700650331.

It is not an unprimeable number, because it can be changed into a prime (21700650431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17249491 + ... + 17250748.

It is an arithmetic number, because the mean of its divisors is an integer number (2949770520).

Almost surely, 2^21700650331 is an apocalyptic number.

21700650331 is a deficient number, since it is larger than the sum of its proper divisors (1897513829).

21700650331 is a wasteful number, since it uses less digits than its factorization.

21700650331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34500293.

The product of its (nonzero) digits is 3780, while the sum is 28.

The spelling of 21700650331 in words is "twenty-one billion, seven hundred million, six hundred fifty thousand, three hundred thirty-one".