31103100303012 has 18 divisors (see below), whose sum is σ = 78621725766038. Its totient is φ = 10367700100992.

The previous prime is 31103100302999. The next prime is 31103100303013. The reversal of 31103100303012 is 21030300130113.

It is a happy number.

31103100303012 is a `hidden beast` number, since 31 + 10 + 310 + 0 + 303 + 0 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30181684613796 + 921415689216 = 5493786^2 + 959904^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is not an unprimeable number, because it can be changed into a prime (31103100303013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 431987504173 + ... + 431987504244.

Almost surely, 2^{31103100303012} is an apocalyptic number.

It is an amenable number.

31103100303012 is an abundant number, since it is smaller than the sum of its proper divisors (47518625463026).

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

31103100303012 is a wasteful number, since it uses less digits than its factorization.

31103100303012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863975008427 (or 863975008422 counting only the distinct ones).

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

Adding to 31103100303012 its reverse (21030300130113), we get a palindrome (52133400433125).

The spelling of 31103100303012 in words is "thirty-one trillion, one hundred three billion, one hundred million, three hundred three thousand, twelve".