31143331040411 has 4 divisors (see below), whose sum is σ = 31210019115912. Its totient is φ = 31076642964912.

The previous prime is 31143331040359. The next prime is 31143331040431. The reversal of 31143331040411 is 11404013334113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31143331040411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31143331040431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33344037050 + ... + 33344037983.

It is an arithmetic number, because the mean of its divisors is an integer number (7802504778978).

Almost surely, 2^{31143331040411} is an apocalyptic number.

31143331040411 is a deficient number, since it is larger than the sum of its proper divisors (66688075501).

31143331040411 is an equidigital number, since it uses as much as digits as its factorization.

31143331040411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66688075500.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 31143331040411 its reverse (11404013334113), we get a palindrome (42547344374524).

The spelling of 31143331040411 in words is "thirty-one trillion, one hundred forty-three billion, three hundred thirty-one million, forty thousand, four hundred eleven".