123012971 has 2 divisors, whose sum is σ = 123012972. Its totient is φ = 123012970.

The previous prime is 123012961. The next prime is 123013001. The reversal of 123012971 is 179210321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123012971 - 2¹⁸ = 122750827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123012971.

It is not a weakly prime, because it can be changed into another prime (123012961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61506485 + 61506486.

It is an arithmetic number, because the mean of its divisors is an integer number (61506486).

Almost surely, 2^123012971 is an apocalyptic number.

123012971 is a deficient number, since it is larger than the sum of its proper divisors (1).

123012971 is an equidigital number, since it uses as much as digits as its factorization.

123012971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 123012971 is about 11091.1212688348. The cubic root of 123012971 is about 497.3364643507.

The spelling of 123012971 in words is "one hundred twenty-three million, twelve thousand, nine hundred seventy-one".