31302213011 has 2 divisors, whose sum is σ = 31302213012. Its totient is φ = 31302213010.

The previous prime is 31302212993. The next prime is 31302213031. The reversal of 31302213011 is 11031220313.

It is a weak prime.

It is an emirp because it is prime and its reverse (11031220313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31302213011 - 2⁶ = 31302212947 is a prime.

It is a super-2 number, since 2×31302213011² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31302213031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15651106505 + 15651106506.

It is an arithmetic number, because the mean of its divisors is an integer number (15651106506).

Almost surely, 2^31302213011 is an apocalyptic number.

31302213011 is a deficient number, since it is larger than the sum of its proper divisors (1).

31302213011 is an equidigital number, since it uses as much as digits as its factorization.

31302213011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31302213011 its reverse (11031220313), we get a palindrome (42333433324).

The spelling of 31302213011 in words is "thirty-one billion, three hundred two million, two hundred thirteen thousand, eleven".