30312101331 has 12 divisors (see below), whose sum is σ = 43798726920. Its totient is φ = 20201338080.

The previous prime is 30312101329. The next prime is 30312101353. The reversal of 30312101331 is 13310121303.

It is a happy number.

It is not a de Polignac number, because 30312101331 - 2¹ = 30312101329 is a prime.

It is a super-2 number, since 2×30312101331² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30312108331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 532186 + ... + 586383.

It is an arithmetic number, because the mean of its divisors is an integer number (3649893910).

Almost surely, 2^30312101331 is an apocalyptic number.

30312101331 is a deficient number, since it is larger than the sum of its proper divisors (13486625589).

30312101331 is a wasteful number, since it uses less digits than its factorization.

30312101331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121586 (or 1121583 counting only the distinct ones).

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

Adding to 30312101331 its reverse (13310121303), we get a palindrome (43622222634).

The spelling of 30312101331 in words is "thirty billion, three hundred twelve million, one hundred one thousand, three hundred thirty-one".