31212032122123 has 16 divisors (see below), whose sum is σ = 31509881694720. Its totient is φ = 30915585671104.

The previous prime is 31212032122099. The next prime is 31212032122157. The reversal of 31212032122123 is 32122123021213.

It is a cyclic number.

It is not a de Polignac number, because 31212032122123 - 2⁵ = 31212032122091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31212032123123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396490215 + ... + 396568927.

It is an arithmetic number, because the mean of its divisors is an integer number (1969367605920).

Almost surely, 2^{31212032122123} is an apocalyptic number.

31212032122123 is a deficient number, since it is larger than the sum of its proper divisors (297849572597).

31212032122123 is a wasteful number, since it uses less digits than its factorization.

31212032122123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87578.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 31212032122123 its reverse (32122123021213), we get a palindrome (63334155143336).

The spelling of 31212032122123 in words is "thirty-one trillion, two hundred twelve billion, thirty-two million, one hundred twenty-two thousand, one hundred twenty-three".