20101442331 has 16 divisors (see below), whose sum is σ = 28339082240. Its totient is φ = 12638708640.

The previous prime is 20101442297. The next prime is 20101442363. The reversal of 20101442331 is 13324410102.

It is not a de Polignac number, because 20101442331 - 2⁷ = 20101442203 is a prime.

It is a super-2 number, since 2×20101442331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20101442298 and 20101442307.

It is not an unprimeable number, because it can be changed into a prime (20101442371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 778000 + ... + 803421.

It is an arithmetic number, because the mean of its divisors is an integer number (1771192640).

Almost surely, 2^20101442331 is an apocalyptic number.

20101442331 is a deficient number, since it is larger than the sum of its proper divisors (8237639909).

20101442331 is a wasteful number, since it uses less digits than its factorization.

20101442331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581666.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20101442331 its reverse (13324410102), we get a palindrome (33425852433).

The spelling of 20101442331 in words is "twenty billion, one hundred one million, four hundred forty-two thousand, three hundred thirty-one".