21703074183831 has 8 divisors (see below), whose sum is σ = 29235756289264. Its totient is φ = 14319554100480.

The previous prime is 21703074183827. The next prime is 21703074183839. The reversal of 21703074183831 is 13838147030712.

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

It is not a de Polignac number, because 21703074183831 - 2² = 21703074183827 is a prime.

It is a super-2 number, since 2×21703074183831² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21703074183839) 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, 37290505180 + ... + 37290505761.

It is an arithmetic number, because the mean of its divisors is an integer number (3654469536158).

Almost surely, 2^{21703074183831} is an apocalyptic number.

21703074183831 is a deficient number, since it is larger than the sum of its proper divisors (7532682105433).

21703074183831 is an equidigital number, since it uses as much as digits as its factorization.

21703074183831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74581011041.

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 21703074183831 in words is "twenty-one trillion, seven hundred three billion, seventy-four million, one hundred eighty-three thousand, eight hundred thirty-one".