20311144121 has 8 divisors (see below), whose sum is σ = 20479418400. Its totient is φ = 20143186560.

The previous prime is 20311144103. The next prime is 20311144151. The reversal of 20311144121 is 12144111302.

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

It is a cyclic number.

It is not a de Polignac number, because 20311144121 - 2²⁶ = 20244035257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20311144093 and 20311144102.

It is not an unprimeable number, because it can be changed into a prime (20311144151) 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, 50486 + ... + 207776.

It is an arithmetic number, because the mean of its divisors is an integer number (2559927300).

Almost surely, 2^20311144121 is an apocalyptic number.

It is an amenable number.

20311144121 is a deficient number, since it is larger than the sum of its proper divisors (168274279).

20311144121 is a wasteful number, since it uses less digits than its factorization.

20311144121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158359.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20311144121 its reverse (12144111302), we get a palindrome (32455255423).

The spelling of 20311144121 in words is "twenty billion, three hundred eleven million, one hundred forty-four thousand, one hundred twenty-one".