31112202123306 has 24 divisors (see below), whose sum is σ = 67894733655840. Its totient is φ = 10296124442856.

The previous prime is 31112202123283. The next prime is 31112202123311. The reversal of 31112202123306 is 60332120221113.

31112202123306 is a `hidden beast` number, since 3 + 1 + 11 + 220 + 2 + 123 + 306 = 666.

It is a super-2 number, since 2×31112202123306² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31112202123306.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6217463950 + ... + 6217468953.

It is an arithmetic number, because the mean of its divisors is an integer number (2828947235660).

Almost surely, 2^{31112202123306} is an apocalyptic number.

31112202123306 is an abundant number, since it is smaller than the sum of its proper divisors (36782531532534).

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

31112202123306 is a wasteful number, since it uses less digits than its factorization.

31112202123306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12434933050 (or 12434933047 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 31112202123306 its reverse (60332120221113), we get a palindrome (91444322344419).

The spelling of 31112202123306 in words is "thirty-one trillion, one hundred twelve billion, two hundred two million, one hundred twenty-three thousand, three hundred six".