31103102102 has 4 divisors (see below), whose sum is σ = 46654653156. Its totient is φ = 15551551050.

The previous prime is 31103102077. The next prime is 31103102111. The reversal of 31103102102 is 20120130113.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 7775775524 + ... + 7775775527.

It is an arithmetic number, because the mean of its divisors is an integer number (11663663289).

Almost surely, 2^31103102102 is an apocalyptic number.

31103102102 is a deficient number, since it is larger than the sum of its proper divisors (15551551054).

31103102102 is a wasteful number, since it uses less digits than its factorization.

31103102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15551551053.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 31103102102 its reverse (20120130113), we get a palindrome (51223232215).

The spelling of 31103102102 in words is "thirty-one billion, one hundred three million, one hundred two thousand, one hundred two".