31113312211002 has 16 divisors (see below), whose sum is σ = 71116142196672. Its totient is φ = 8889517774560.

The previous prime is 31113312210943. The next prime is 31113312211057. The reversal of 31113312211002 is 20011221331113.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 31113312211002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370396573899 + ... + 370396573982.

It is an arithmetic number, because the mean of its divisors is an integer number (4444758887292).

Almost surely, 2^{31113312211002} is an apocalyptic number.

31113312211002 is an abundant number, since it is smaller than the sum of its proper divisors (40002829985670).

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

31113312211002 is a wasteful number, since it uses less digits than its factorization.

31113312211002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740793147893.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 31113312211002 its reverse (20011221331113), we get a palindrome (51124533542115).

The spelling of 31113312211002 in words is "thirty-one trillion, one hundred thirteen billion, three hundred twelve million, two hundred eleven thousand, two".