31313133333011 has 2 divisors, whose sum is σ = 31313133333012. Its totient is φ = 31313133333010.

The previous prime is 31313133332959. The next prime is 31313133333061. The reversal of 31313133333011 is 11033333131313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31313133333011 - 2⁶ = 31313133332947 is a prime.

It is a super-2 number, since 2×31313133333011² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31313133333061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656566666505 + 15656566666506.

It is an arithmetic number, because the mean of its divisors is an integer number (15656566666506).

Almost surely, 2^{31313133333011} is an apocalyptic number.

31313133333011 is a deficient number, since it is larger than the sum of its proper divisors (1).

31313133333011 is an equidigital number, since it uses as much as digits as its factorization.

31313133333011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 29.

Adding to 31313133333011 its reverse (11033333131313), we get a palindrome (42346466464324).

The spelling of 31313133333011 in words is "thirty-one trillion, three hundred thirteen billion, one hundred thirty-three million, three hundred thirty-three thousand, eleven".