31230322133 has 16 divisors (see below), whose sum is σ = 32812356096. Its totient is φ = 29697732480.

The previous prime is 31230322129. The next prime is 31230322177. The reversal of 31230322133 is 33122303213.

It is a cyclic number.

It is not a de Polignac number, because 31230322133 - 2² = 31230322129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31230322099 and 31230322108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31230322183) 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, 195713 + ... + 317433.

It is an arithmetic number, because the mean of its divisors is an integer number (2050772256).

Almost surely, 2^31230322133 is an apocalyptic number.

It is an amenable number.

31230322133 is a deficient number, since it is larger than the sum of its proper divisors (1582033963).

31230322133 is a wasteful number, since it uses less digits than its factorization.

31230322133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121924.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31230322133 its reverse (33122303213), we get a palindrome (64352625346).

The spelling of 31230322133 in words is "thirty-one billion, two hundred thirty million, three hundred twenty-two thousand, one hundred thirty-three".