20131231241 has 32 divisors (see below), whose sum is σ = 23614156800. Its totient is φ = 16959156480.

The previous prime is 20131231213. The next prime is 20131231249. The reversal of 20131231241 is 14213213102.

It is not a de Polignac number, because 20131231241 - 2³⁰ = 19057489417 is a prime.

It is a super-2 number, since 2×20131231241² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20131231249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3444800 + ... + 3450638.

It is an arithmetic number, because the mean of its divisors is an integer number (737942400).

Almost surely, 2^20131231241 is an apocalyptic number.

It is an amenable number.

20131231241 is a deficient number, since it is larger than the sum of its proper divisors (3482925559).

20131231241 is a wasteful number, since it uses less digits than its factorization.

20131231241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6149.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20131231241 its reverse (14213213102), we get a palindrome (34344444343).

The spelling of 20131231241 in words is "twenty billion, one hundred thirty-one million, two hundred thirty-one thousand, two hundred forty-one".