31211300122 has 8 divisors (see below), whose sum is σ = 46990991700. Its totient is φ = 15547636224.

The previous prime is 31211300117. The next prime is 31211300129. The reversal of 31211300122 is 22100311213.

It can be written as a sum of positive squares in 2 ways, for example, as 23781032521 + 7430267601 = 154211^2 + 86199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31211300096 and 31211300105.

It is not an unprimeable number, because it can be changed into a prime (31211300129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29006247 + ... + 29007322.

Almost surely, 2^31211300122 is an apocalyptic number.

31211300122 is a deficient number, since it is larger than the sum of its proper divisors (15779691578).

31211300122 is a wasteful number, since it uses less digits than its factorization.

31211300122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58013840.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31211300122 its reverse (22100311213), we get a palindrome (53311611335).

The spelling of 31211300122 in words is "thirty-one billion, two hundred eleven million, three hundred thousand, one hundred twenty-two".