31213030022224 has 20 divisors (see below), whose sum is σ = 60475342244436. Its totient is φ = 15606490088192.

The previous prime is 31213030022221. The next prime is 31213030022327. The reversal of 31213030022224 is 42222003031213.

It can be written as a sum of positive squares in 2 ways, for example, as 18799161640000 + 12413868382224 = 4335800^2 + 3523332^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213030022221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12765522 + ... + 15012814.

Almost surely, 2^{31213030022224} is an apocalyptic number.

It is an amenable number.

31213030022224 is a deficient number, since it is larger than the sum of its proper divisors (29262312222212).

31213030022224 is a wasteful number, since it uses less digits than its factorization.

31213030022224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115374 (or 3115368 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31213030022224 its reverse (42222003031213), we get a palindrome (73435033053437).

The spelling of 31213030022224 in words is "thirty-one trillion, two hundred thirteen billion, thirty million, twenty-two thousand, two hundred twenty-four".