31113130220102 has 16 divisors (see below), whose sum is σ = 53338633481760. Its totient is φ = 13333738961088.

The previous prime is 31113130220099. The next prime is 31113130220111. The reversal of 31113130220102 is 20102203131113.

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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37887977 + ... + 38700452.

It is an arithmetic number, because the mean of its divisors is an integer number (3333664592610).

Almost surely, 2^{31113130220102} is an apocalyptic number.

31113130220102 is a deficient number, since it is larger than the sum of its proper divisors (22225503261658).

31113130220102 is a wasteful number, since it uses less digits than its factorization.

31113130220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76617455.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31113130220102 its reverse (20102203131113), we get a palindrome (51215333351215).

The spelling of 31113130220102 in words is "thirty-one trillion, one hundred thirteen billion, one hundred thirty million, two hundred twenty thousand, one hundred two".