31323112122 has 16 divisors (see below), whose sum is σ = 62647958880. Its totient is φ = 10440748272.

The previous prime is 31323112091. The next prime is 31323112127. The reversal of 31323112122 is 22121132313.

It is a super-2 number, since 2×31323112122² (a number of 22 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (31323112127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385708 + ... + 459800.

It is an arithmetic number, because the mean of its divisors is an integer number (3915497430).

Almost surely, 2^31323112122 is an apocalyptic number.

31323112122 is an abundant number, since it is smaller than the sum of its proper divisors (31324846758).

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

31323112122 is a wasteful number, since it uses less digits than its factorization.

31323112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144557.

The product of its digits is 432, while the sum is 21.

Adding to 31323112122 its reverse (22121132313), we get a palindrome (53444244435).

The spelling of 31323112122 in words is "thirty-one billion, three hundred twenty-three million, one hundred twelve thousand, one hundred twenty-two".