31445215403122 has 16 divisors (see below), whose sum is σ = 47191256955360. Its totient is φ = 15714797902848.

The previous prime is 31445215403071. The next prime is 31445215403137. The reversal of 31445215403122 is 22130451254413.

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, 42605029 + ... + 43336807.

It is an arithmetic number, because the mean of its divisors is an integer number (2949453559710).

Almost surely, 2^{31445215403122} is an apocalyptic number.

31445215403122 is a deficient number, since it is larger than the sum of its proper divisors (15746041552238).

31445215403122 is a wasteful number, since it uses less digits than its factorization.

31445215403122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742425.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 31445215403122 its reverse (22130451254413), we get a palindrome (53575666657535).

The spelling of 31445215403122 in words is "thirty-one trillion, four hundred forty-five billion, two hundred fifteen million, four hundred three thousand, one hundred twenty-two".