31133420233 has 8 divisors (see below), whose sum is σ = 32296481280. Its totient is φ = 29989583520.

The previous prime is 31133420231. The next prime is 31133420239. The reversal of 31133420233 is 33202433113.

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

It is a cyclic number.

It is not a de Polignac number, because 31133420233 - 2¹ = 31133420231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31133420198 and 31133420207.

It is not an unprimeable number, because it can be changed into a prime (31133420231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4802785 + ... + 4809262.

It is an arithmetic number, because the mean of its divisors is an integer number (4037060160).

Almost surely, 2^31133420233 is an apocalyptic number.

It is an amenable number.

31133420233 is a deficient number, since it is larger than the sum of its proper divisors (1163061047).

31133420233 is an equidigital number, since it uses as much as digits as its factorization.

31133420233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9612167.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 31133420233 its reverse (33202433113), we get a palindrome (64335853346).

The spelling of 31133420233 in words is "thirty-one billion, one hundred thirty-three million, four hundred twenty thousand, two hundred thirty-three".