311030120103012 has 36 divisors (see below), whose sum is σ = 786254415189516. Its totient is φ = 103671512497920.

The previous prime is 311030120103007. The next prime is 311030120103029. The reversal of 311030120103012 is 210301021030113.

311030120103012 is a `hidden beast` number, since 31 + 1 + 0 + 301 + 20 + 10 + 301 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 280977182115876 + 30052937987136 = 16762374^2 + 5482056^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×311030120103012² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215696553 + ... + 217133744.

It is an arithmetic number, because the mean of its divisors is an integer number (21840400421931).

Almost surely, 2^{311030120103012} is an apocalyptic number.

It is an amenable number.

311030120103012 is an abundant number, since it is smaller than the sum of its proper divisors (475224295086504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311030120103012 is a wasteful number, since it uses less digits than its factorization.

311030120103012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432850268 (or 432850263 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 311030120103012 its reverse (210301021030113), we get a palindrome (521331141133125).

The spelling of 311030120103012 in words is "three hundred eleven trillion, thirty billion, one hundred twenty million, one hundred three thousand, twelve".