31122130031222 has 16 divisors (see below), whose sum is σ = 48799423019520. Its totient is φ = 14858059131432.

The previous prime is 31122130031221. The next prime is 31122130031227. The reversal of 31122130031222 is 22213003122113.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31122130031221) 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, 600833822 + ... + 600885617.

It is an arithmetic number, because the mean of its divisors is an integer number (3049963938720).

Almost surely, 2^{31122130031222} is an apocalyptic number.

31122130031222 is a deficient number, since it is larger than the sum of its proper divisors (17677292988298).

31122130031222 is a wasteful number, since it uses less digits than its factorization.

31122130031222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201720027.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31122130031222 its reverse (22213003122113), we get a palindrome (53335133153335).

The spelling of 31122130031222 in words is "thirty-one trillion, one hundred twenty-two billion, one hundred thirty million, thirty-one thousand, two hundred twenty-two".