123011071 has 2 divisors, whose sum is σ = 123011072. Its totient is φ = 123011070.

The previous prime is 123011041. The next prime is 123011081. The reversal of 123011071 is 170110321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123011071 - 2²³ = 114622463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123011041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61505535 + 61505536.

It is an arithmetic number, because the mean of its divisors is an integer number (61505536).

Almost surely, 2^123011071 is an apocalyptic number.

123011071 is a deficient number, since it is larger than the sum of its proper divisors (1).

123011071 is an equidigital number, since it uses as much as digits as its factorization.

123011071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 123011071 is about 11091.0356144050. The cubic root of 123011071 is about 497.3339037965. Note that the first 3 decimals are identical.

Adding to 123011071 its reverse (170110321), we get a palindrome (293121392).

The spelling of 123011071 in words is "one hundred twenty-three million, eleven thousand, seventy-one".