20404031134 has 16 divisors (see below), whose sum is σ = 31464262656. Its totient is φ = 9918819000.

The previous prime is 20404031119. The next prime is 20404031233. The reversal of 20404031134 is 43113040402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704562 + ... + 732949.

It is an arithmetic number, because the mean of its divisors is an integer number (1966516416).

Almost surely, 2^20404031134 is an apocalyptic number.

20404031134 is a deficient number, since it is larger than the sum of its proper divisors (11060231522).

20404031134 is a wasteful number, since it uses less digits than its factorization.

20404031134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437711.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20404031134 its reverse (43113040402), we get a palindrome (63517071536).

The spelling of 20404031134 in words is "twenty billion, four hundred four million, thirty-one thousand, one hundred thirty-four".