31133122123 has 2 divisors, whose sum is σ = 31133122124. Its totient is φ = 31133122122.

The previous prime is 31133122061. The next prime is 31133122169. The reversal of 31133122123 is 32122133113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31133122123 - 2⁹ = 31133121611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31133122094 and 31133122103.

It is not a weakly prime, because it can be changed into another prime (31133122523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15566561061 + 15566561062.

It is an arithmetic number, because the mean of its divisors is an integer number (15566561062).

Almost surely, 2^31133122123 is an apocalyptic number.

31133122123 is a deficient number, since it is larger than the sum of its proper divisors (1).

31133122123 is an equidigital number, since it uses as much as digits as its factorization.

31133122123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

Adding to 31133122123 its reverse (32122133113), we get a palindrome (63255255236).

The spelling of 31133122123 in words is "thirty-one billion, one hundred thirty-three million, one hundred twenty-two thousand, one hundred twenty-three".