20123131411 has 8 divisors (see below), whose sum is σ = 21214527264. Its totient is φ = 19049775360.

The previous prime is 20123131409. The next prime is 20123131423. The reversal of 20123131411 is 11413132102.

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 20123131411 - 2¹ = 20123131409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123131111) 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, 4507660 + ... + 4512121.

It is an arithmetic number, because the mean of its divisors is an integer number (2651815908).

Almost surely, 2^20123131411 is an apocalyptic number.

20123131411 is a deficient number, since it is larger than the sum of its proper divisors (1091395853).

20123131411 is an equidigital number, since it uses as much as digits as its factorization.

20123131411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9019901.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20123131411 its reverse (11413132102), we get a palindrome (31536263513).

The spelling of 20123131411 in words is "twenty billion, one hundred twenty-three million, one hundred thirty-one thousand, four hundred eleven".