31121332207 has 16 divisors (see below), whose sum is σ = 37538041600. Its totient is φ = 25204737600.

The previous prime is 31121332133. The next prime is 31121332237. The reversal of 31121332207 is 70223312113.

It is a happy number.

It is not a de Polignac number, because 31121332207 - 2¹¹ = 31121330159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31121332237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258294 + ... + 359107.

It is an arithmetic number, because the mean of its divisors is an integer number (2346127600).

Almost surely, 2^31121332207 is an apocalyptic number.

31121332207 is a deficient number, since it is larger than the sum of its proper divisors (6416709393).

31121332207 is a wasteful number, since it uses less digits than its factorization.

31121332207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617806.

The product of its (nonzero) digits is 1512, while the sum is 25.

The spelling of 31121332207 in words is "thirty-one billion, one hundred twenty-one million, three hundred thirty-two thousand, two hundred seven".