31212103112033 has 4 divisors (see below), whose sum is σ = 31212163926720. Its totient is φ = 31212042297348.

The previous prime is 31212103111979. The next prime is 31212103112041. The reversal of 31212103112033 is 33021130121213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31212103112033 - 2¹² = 31212103107937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31212103114033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29630885 + ... + 30666162.

It is an arithmetic number, because the mean of its divisors is an integer number (7803040981680).

Almost surely, 2^{31212103112033} is an apocalyptic number.

It is an amenable number.

31212103112033 is a deficient number, since it is larger than the sum of its proper divisors (60814687).

31212103112033 is an equidigital number, since it uses as much as digits as its factorization.

31212103112033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60814686.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31212103112033 its reverse (33021130121213), we get a palindrome (64233233233246).

The spelling of 31212103112033 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, one hundred twelve thousand, thirty-three".