31211032031122 has 16 divisors (see below), whose sum is σ = 46822880475000. Its totient is φ = 15603405373440.

The previous prime is 31211032031119. The next prime is 31211032031149. The reversal of 31211032031122 is 22113023011213.

It can be written as a sum of positive squares in 4 ways, for example, as 29637364648441 + 1573667382681 = 5444021^2 + 1254459^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31211032031093 and 31211032031102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724990254 + ... + 725033302.

Almost surely, 2^{31211032031122} is an apocalyptic number.

31211032031122 is a deficient number, since it is larger than the sum of its proper divisors (15611848443878).

31211032031122 is a wasteful number, since it uses less digits than its factorization.

31211032031122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83661.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31211032031122 its reverse (22113023011213), we get a palindrome (53324055042335).

The spelling of 31211032031122 in words is "thirty-one trillion, two hundred eleven billion, thirty-two million, thirty-one thousand, one hundred twenty-two".