31320313011 has 24 divisors (see below), whose sum is σ = 50524954480. Its totient is φ = 19274036832.

The previous prime is 31320312983. The next prime is 31320313067. The reversal of 31320313011 is 11031302313.

It is a happy number.

31320313011 is a `hidden beast` number, since 31 + 320 + 313 + 0 + 1 + 1 = 666.

It is not a de Polignac number, because 31320313011 - 2¹¹ = 31320310963 is a prime.

It is a super-2 number, since 2×31320313011² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31320303011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4954156 + ... + 4960473.

Almost surely, 2^31320313011 is an apocalyptic number.

31320313011 is a deficient number, since it is larger than the sum of its proper divisors (19204641469).

31320313011 is an equidigital number, since it uses as much as digits as its factorization.

31320313011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9914657 (or 9914645 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31320313011 its reverse (11031302313), we get a palindrome (42351615324).

The spelling of 31320313011 in words is "thirty-one billion, three hundred twenty million, three hundred thirteen thousand, eleven".