31303103221002 has 16 divisors (see below), whose sum is σ = 62606307506112. Its totient is φ = 10434350896320.

The previous prime is 31303103221001. The next prime is 31303103221057. The reversal of 31303103221002 is 20012230130313.

It is a self number, because there is not a number n which added to its sum of digits gives 31303103221002.

It is not an unprimeable number, because it can be changed into a prime (31303103221001) 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 7 ways as a sum of consecutive naturals, for example, 165427 + ... + 7914137.

It is an arithmetic number, because the mean of its divisors is an integer number (3912894219132).

Almost surely, 2^{31303103221002} is an apocalyptic number.

31303103221002 is an abundant number, since it is smaller than the sum of its proper divisors (31303204285110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31303103221002 is a wasteful number, since it uses less digits than its factorization.

31303103221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8422013.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31303103221002 its reverse (20012230130313), we get a palindrome (51315333351315).

The spelling of 31303103221002 in words is "thirty-one trillion, three hundred three billion, one hundred three million, two hundred twenty-one thousand, two".