31212103122983 has 4 divisors (see below), whose sum is σ = 31876190423520. Its totient is φ = 30548015822448.

The previous prime is 31212103122923. The next prime is 31212103123013. The reversal of 31212103122983 is 38922130121213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31212103122983 - 2⁶ = 31212103122919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212103122923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332043650198 + ... + 332043650291.

It is an arithmetic number, because the mean of its divisors is an integer number (7969047605880).

Almost surely, 2^{31212103122983} is an apocalyptic number.

31212103122983 is a deficient number, since it is larger than the sum of its proper divisors (664087300537).

31212103122983 is an equidigital number, since it uses as much as digits as its factorization.

31212103122983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664087300536.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 31212103122983 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, one hundred twenty-two thousand, nine hundred eighty-three".