20012240131 has 16 divisors (see below), whose sum is σ = 22494560256. Its totient is φ = 17665043616.

The previous prime is 20012240113. The next prime is 20012240147. The reversal of 20012240131 is 13104221002.

It is a cyclic number.

It is not a de Polignac number, because 20012240131 - 2¹¹ = 20012238083 is a prime.

It is a super-2 number, since 2×20012240131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012240111) 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, 1675326 + ... + 1687228.

It is an arithmetic number, because the mean of its divisors is an integer number (1405910016).

Almost surely, 2^20012240131 is an apocalyptic number.

20012240131 is a deficient number, since it is larger than the sum of its proper divisors (2482320125).

20012240131 is a wasteful number, since it uses less digits than its factorization.

20012240131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17562.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20012240131 its reverse (13104221002), we get a palindrome (33116461133).

The spelling of 20012240131 in words is "twenty billion, twelve million, two hundred forty thousand, one hundred thirty-one".