31311302041 has 4 divisors (see below), whose sum is σ = 31314643492. Its totient is φ = 31307960592.

The previous prime is 31311302027. The next prime is 31311302047. The reversal of 31311302041 is 14020311313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14020311313 = 1103 ⋅12711071.

It can be written as a sum of positive squares in 2 ways, for example, as 9068562441 + 22242739600 = 95229^2 + 149140^2 .

It is a cyclic number.

It is not a de Polignac number, because 31311302041 - 2¹⁹ = 31310777753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31311302047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1656630 + ... + 1675423.

It is an arithmetic number, because the mean of its divisors is an integer number (7828660873).

Almost surely, 2^31311302041 is an apocalyptic number.

It is an amenable number.

31311302041 is a deficient number, since it is larger than the sum of its proper divisors (3341451).

31311302041 is an equidigital number, since it uses as much as digits as its factorization.

31311302041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341450.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31311302041 its reverse (14020311313), we get a palindrome (45331613354).

The spelling of 31311302041 in words is "thirty-one billion, three hundred eleven million, three hundred two thousand, forty-one".