31224144211012 has 6 divisors (see below), whose sum is σ = 54642252369278. Its totient is φ = 15612072105504.

The previous prime is 31224144210979. The next prime is 31224144211063. The reversal of 31224144211012 is 21011244142213.

It can be written as a sum of positive squares in only one way, i.e., 30890319104836 + 333825106176 = 5557906^2 + 577776^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3903018026373 + ... + 3903018026380.

Almost surely, 2^{31224144211012} is an apocalyptic number.

It is an amenable number.

31224144211012 is a deficient number, since it is larger than the sum of its proper divisors (23418108158266).

31224144211012 is a wasteful number, since it uses less digits than its factorization.

31224144211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7806036052757 (or 7806036052755 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 31224144211012 its reverse (21011244142213), we get a palindrome (52235388353225).

The spelling of 31224144211012 in words is "thirty-one trillion, two hundred twenty-four billion, one hundred forty-four million, two hundred eleven thousand, twelve".