31210103005 has 16 divisors (see below), whose sum is σ = 38167845120. Its totient is φ = 24494962752.

The previous prime is 31210102999. The next prime is 31210103017. The reversal of 31210103005 is 50030101213.

It is a cyclic number.

It is not a de Polignac number, because 31210103005 - 2¹⁵ = 31210070237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31210103005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189619 + ... + 313648.

It is an arithmetic number, because the mean of its divisors is an integer number (2385490320).

Almost surely, 2^31210103005 is an apocalyptic number.

It is an amenable number.

31210103005 is a deficient number, since it is larger than the sum of its proper divisors (6957742115).

31210103005 is a wasteful number, since it uses less digits than its factorization.

31210103005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503508.

The product of its (nonzero) digits is 90, while the sum is 16.

Adding to 31210103005 its reverse (50030101213), we get a palindrome (81240204218).

The spelling of 31210103005 in words is "thirty-one billion, two hundred ten million, one hundred three thousand, five".