31122100002 has 48 divisors (see below), whose sum is σ = 73772716032. Its totient is φ = 8724250080.

The previous prime is 31122099961. The next prime is 31122100049. The reversal of 31122100002 is 20000122113.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 983074 + ... + 1014237.

It is an arithmetic number, because the mean of its divisors is an integer number (1536931584).

Almost surely, 2^31122100002 is an apocalyptic number.

31122100002 is an abundant number, since it is smaller than the sum of its proper divisors (42650616030).

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

31122100002 is a wasteful number, since it uses less digits than its factorization.

31122100002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997383 (or 1997376 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 31122100002 its reverse (20000122113), we get a palindrome (51122222115).

The spelling of 31122100002 in words is "thirty-one billion, one hundred twenty-two million, one hundred thousand, two".