31012220033 has 8 divisors (see below), whose sum is σ = 33526725120. Its totient is φ = 28585943280.

The previous prime is 31012220009. The next prime is 31012220053. The reversal of 31012220033 is 33002221013.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31012220033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31012219993 and 31012220020.

It is not an unprimeable number, because it can be changed into a prime (31012220003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22056353 + ... + 22057758.

It is an arithmetic number, because the mean of its divisors is an integer number (4190840640).

Almost surely, 2^31012220033 is an apocalyptic number.

It is an amenable number.

31012220033 is a deficient number, since it is larger than the sum of its proper divisors (2514505087).

31012220033 is a wasteful number, since it uses less digits than its factorization.

31012220033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44114167.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31012220033 its reverse (33002221013), we get a palindrome (64014441046).

The spelling of 31012220033 in words is "thirty-one billion, twelve million, two hundred twenty thousand, thirty-three".