31103231122002 has 64 divisors (see below), whose sum is σ = 70934483773440. Its totient is φ = 9006987608064.

The previous prime is 31103231121959. The next prime is 31103231122003. The reversal of 31103231122002 is 20022113230113.

It is a self number, because there is not a number n which added to its sum of digits gives 31103231122002.

It is not an unprimeable number, because it can be changed into a prime (31103231122003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43861074 + ... + 44564562.

It is an arithmetic number, because the mean of its divisors is an integer number (1108351308960).

Almost surely, 2^{31103231122002} is an apocalyptic number.

31103231122002 is an abundant number, since it is smaller than the sum of its proper divisors (39831252651438).

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

31103231122002 is a wasteful number, since it uses less digits than its factorization.

31103231122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736867.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31103231122002 its reverse (20022113230113), we get a palindrome (51125344352115).

The spelling of 31103231122002 in words is "thirty-one trillion, one hundred three billion, two hundred thirty-one million, one hundred twenty-two thousand, two".