31200002123022 has 16 divisors (see below), whose sum is σ = 69333338051280. Its totient is φ = 10400000707656.

The previous prime is 31200002122987. The next prime is 31200002123033. The reversal of 31200002123022 is 22032120000213.

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

It is a junction number, because it is equal to n+sod(n) for n = 31200002122986 and 31200002123004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288888908493 + ... + 288888908600.

It is an arithmetic number, because the mean of its divisors is an integer number (4333333628205).

Almost surely, 2^{31200002123022} is an apocalyptic number.

31200002123022 is an abundant number, since it is smaller than the sum of its proper divisors (38133335928258).

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

31200002123022 is a wasteful number, since it uses less digits than its factorization.

31200002123022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577777817104 (or 577777817098 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31200002123022 its reverse (22032120000213), we get a palindrome (53232122123235).

The spelling of 31200002123022 in words is "thirty-one trillion, two hundred billion, two million, one hundred twenty-three thousand, twenty-two".