20133131194 has 24 divisors (see below), whose sum is σ = 33437060244. Its totient is φ = 9084609600.

The previous prime is 20133131159. The next prime is 20133131209. The reversal of 20133131194 is 49113133102.

It can be written as a sum of positive squares in 2 ways, for example, as 19995374025 + 137757169 = 141405^2 + 11737^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 270477 + ... + 336784.

Almost surely, 2^20133131194 is an apocalyptic number.

20133131194 is a deficient number, since it is larger than the sum of its proper divisors (13303929050).

20133131194 is a wasteful number, since it uses less digits than its factorization.

20133131194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607422 (or 607411 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

Adding to 20133131194 its reverse (49113133102), we get a palindrome (69246264296).

The spelling of 20133131194 in words is "twenty billion, one hundred thirty-three million, one hundred thirty-one thousand, one hundred ninety-four".