31311102 has 16 divisors (see below), whose sum is σ = 64315152. Its totient is φ = 10154880.

The previous prime is 31311101. The next prime is 31311109. The reversal of 31311102 is 20111313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70299 + ... + 70742.

It is an arithmetic number, because the mean of its divisors is an integer number (4019697).

Almost surely, 2^31311102 is an apocalyptic number.

31311102 is an abundant number, since it is smaller than the sum of its proper divisors (33004050).

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

31311102 is a wasteful number, since it uses less digits than its factorization.

31311102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141083.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 31311102 is about 5595.6324039379. The cubic root of 31311102 is about 315.1854186762.

Adding to 31311102 its reverse (20111313), we get a palindrome (51422415).

It can be divided in two parts, 31311 and 102, that added together give a palindrome (31413).

The spelling of 31311102 in words is "thirty-one million, three hundred eleven thousand, one hundred two".