20311142044 has 12 divisors (see below), whose sum is σ = 37415261800. Its totient is φ = 9621067248.

The previous prime is 20311142029. The next prime is 20311142057. The reversal of 20311142044 is 44024111302.

It is a happy number.

It is a super-2 number, since 2×20311142044² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 133625859 + ... + 133626010.

Almost surely, 2^20311142044 is an apocalyptic number.

It is an amenable number.

20311142044 is a deficient number, since it is larger than the sum of its proper divisors (17104119756).

20311142044 is a wasteful number, since it uses less digits than its factorization.

20311142044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267251892 (or 267251890 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20311142044 its reverse (44024111302), we get a palindrome (64335253346).

The spelling of 20311142044 in words is "twenty billion, three hundred eleven million, one hundred forty-two thousand, forty-four".