20173831023235 has 32 divisors (see below), whose sum is σ = 25159243198464. Its totient is φ = 15512699664000.

The previous prime is 20173831023233. The next prime is 20173831023263. The reversal of 20173831023235 is 53232013837102.

It is a happy number.

It is not a de Polignac number, because 20173831023235 - 2¹ = 20173831023233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20173831023233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14131930 + ... + 15493840.

It is an arithmetic number, because the mean of its divisors is an integer number (786226349952).

Almost surely, 2^{20173831023235} is an apocalyptic number.

20173831023235 is a deficient number, since it is larger than the sum of its proper divisors (4985412175229).

20173831023235 is a wasteful number, since it uses less digits than its factorization.

20173831023235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362595.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 20173831023235 in words is "twenty trillion, one hundred seventy-three billion, eight hundred thirty-one million, twenty-three thousand, two hundred thirty-five".