31133311302223 has 16 divisors (see below), whose sum is σ = 33857936050176. Its totient is φ = 28456054794720.

The previous prime is 31133311302169. The next prime is 31133311302227. The reversal of 31133311302223 is 32220311333113.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31133311302223 is a prime.

It is a super-2 number, since 2×31133311302223² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31133311302191 and 31133311302200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31133311302227) 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, 2554983 + ... + 8294248.

It is an arithmetic number, because the mean of its divisors is an integer number (2116121003136).

Almost surely, 2^{31133311302223} is an apocalyptic number.

31133311302223 is a deficient number, since it is larger than the sum of its proper divisors (2724624747953).

31133311302223 is a wasteful number, since it uses less digits than its factorization.

31133311302223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10851414.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 31133311302223 its reverse (32220311333113), we get a palindrome (63353622635336).

The spelling of 31133311302223 in words is "thirty-one trillion, one hundred thirty-three billion, three hundred eleven million, three hundred two thousand, two hundred twenty-three".