31220302224044 has 6 divisors (see below), whose sum is σ = 54635528892084. Its totient is φ = 15610151112020.

The previous prime is 31220302224043. The next prime is 31220302224049. The reversal of 31220302224044 is 44042220302213.

It is a junction number, because it is equal to n+sod(n) for n = 31220302223998 and 31220302224016.

It is not an unprimeable number, because it can be changed into a prime (31220302224043) 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 as a sum of consecutive naturals, namely, 3902537778002 + ... + 3902537778009.

It is an arithmetic number, because the mean of its divisors is an integer number (9105921482014).

Almost surely, 2^{31220302224044} is an apocalyptic number.

It is an amenable number.

31220302224044 is a deficient number, since it is larger than the sum of its proper divisors (23415226668040).

31220302224044 is a wasteful number, since it uses less digits than its factorization.

31220302224044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7805075556015 (or 7805075556013 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 31220302224044 its reverse (44042220302213), we get a palindrome (75262522526257).

The spelling of 31220302224044 in words is "thirty-one trillion, two hundred twenty billion, three hundred two million, two hundred twenty-four thousand, forty-four".