31130320311102 has 16 divisors (see below), whose sum is σ = 62260839847440. Its totient is φ = 10376740232832.

The previous prime is 31130320311091. The next prime is 31130320311127. The reversal of 31130320311102 is 20111302303113.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6229963 + ... + 10053510.

It is an arithmetic number, because the mean of its divisors is an integer number (3891302490465).

Almost surely, 2^{31130320311102} is an apocalyptic number.

31130320311102 is an abundant number, since it is smaller than the sum of its proper divisors (31130519536338).

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

31130320311102 is a wasteful number, since it uses less digits than its factorization.

31130320311102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16602107.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31130320311102 its reverse (20111302303113), we get a palindrome (51241622614215).

The spelling of 31130320311102 in words is "thirty-one trillion, one hundred thirty billion, three hundred twenty million, three hundred eleven thousand, one hundred two".