31310320111 has 8 divisors (see below), whose sum is σ = 35784522144. Its totient is φ = 26836442880.

The previous prime is 31310320103. The next prime is 31310320117. The reversal of 31310320111 is 11102301313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31310320111 - 2³ = 31310320103 is a prime.

It is a super-2 number, since 2×31310320111² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31310320117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182451 + ... + 309691.

It is an arithmetic number, because the mean of its divisors is an integer number (4473065268).

Almost surely, 2^31310320111 is an apocalyptic number.

31310320111 is a deficient number, since it is larger than the sum of its proper divisors (4474202033).

31310320111 is a wasteful number, since it uses less digits than its factorization.

31310320111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162401.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31310320111 its reverse (11102301313), we get a palindrome (42412621424).

The spelling of 31310320111 in words is "thirty-one billion, three hundred ten million, three hundred twenty thousand, one hundred eleven".