31111310102 has 4 divisors (see below), whose sum is σ = 46666965156. Its totient is φ = 15555655050.

The previous prime is 31111310059. The next prime is 31111310189. The reversal of 31111310102 is 20101311113.

It is a happy number.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 7777827524 + ... + 7777827527.

It is an arithmetic number, because the mean of its divisors is an integer number (11666741289).

Almost surely, 2^31111310102 is an apocalyptic number.

31111310102 is a deficient number, since it is larger than the sum of its proper divisors (15555655054).

31111310102 is a wasteful number, since it uses less digits than its factorization.

31111310102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15555655053.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 31111310102 its reverse (20101311113), we get a palindrome (51212621215).

The spelling of 31111310102 in words is "thirty-one billion, one hundred eleven million, three hundred ten thousand, one hundred two".