31331113241 has 2 divisors, whose sum is σ = 31331113242. Its totient is φ = 31331113240.

The previous prime is 31331113207. The next prime is 31331113279. The reversal of 31331113241 is 14231113313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31330416016 + 697225 = 177004^2 + 835^2 .

It is a cyclic number.

It is not a de Polignac number, because 31331113241 - 2²² = 31326918937 is a prime.

It is not a weakly prime, because it can be changed into another prime (31331110241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15665556620 + 15665556621.

It is an arithmetic number, because the mean of its divisors is an integer number (15665556621).

Almost surely, 2^31331113241 is an apocalyptic number.

It is an amenable number.

31331113241 is a deficient number, since it is larger than the sum of its proper divisors (1).

31331113241 is an equidigital number, since it uses as much as digits as its factorization.

31331113241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 23.

Adding to 31331113241 its reverse (14231113313), we get a palindrome (45562226554).

The spelling of 31331113241 in words is "thirty-one billion, three hundred thirty-one million, one hundred thirteen thousand, two hundred forty-one".