31101022123 has 2 divisors, whose sum is σ = 31101022124. Its totient is φ = 31101022122.

The previous prime is 31101022093. The next prime is 31101022159. The reversal of 31101022123 is 32122010113.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31101022123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31101022097 and 31101022106.

It is not a weakly prime, because it can be changed into another prime (31101022163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15550511061 + 15550511062.

It is an arithmetic number, because the mean of its divisors is an integer number (15550511062).

Almost surely, 2^31101022123 is an apocalyptic number.

31101022123 is a deficient number, since it is larger than the sum of its proper divisors (1).

31101022123 is an equidigital number, since it uses as much as digits as its factorization.

31101022123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31101022123 its reverse (32122010113), we get a palindrome (63223032236).

The spelling of 31101022123 in words is "thirty-one billion, one hundred one million, twenty-two thousand, one hundred twenty-three".