31133050505 has 8 divisors (see below), whose sum is σ = 37379746824. Its totient is φ = 24893049600.

The previous prime is 31133050483. The next prime is 31133050517. The reversal of 31133050505 is 50505033113.

It can be written as a sum of positive squares in 4 ways, for example, as 35844169 + 31097206336 = 5987^2 + 176344^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31133050505 - 2⁶ = 31133050441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1663616 + ... + 1682225.

It is an arithmetic number, because the mean of its divisors is an integer number (4672468353).

Almost surely, 2^31133050505 is an apocalyptic number.

It is an amenable number.

31133050505 is a deficient number, since it is larger than the sum of its proper divisors (6246696319).

31133050505 is a wasteful number, since it uses less digits than its factorization.

31133050505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3347707.

The product of its (nonzero) digits is 3375, while the sum is 26.

Adding to 31133050505 its reverse (50505033113), we get a palindrome (81638083618).

The spelling of 31133050505 in words is "thirty-one billion, one hundred thirty-three million, fifty thousand, five hundred five".