163123451 has 2 divisors, whose sum is σ = 163123452. Its totient is φ = 163123450.

The previous prime is 163123447. The next prime is 163123487. The reversal of 163123451 is 154321361.

It is a weak prime.

It is an emirp because it is prime and its reverse (154321361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163123451 - 2² = 163123447 is a prime.

It is a super-2 number, since 2×163123451² = 53218520532298802, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163123451.

It is not a weakly prime, because it can be changed into another prime (163123351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81561725 + 81561726.

It is an arithmetic number, because the mean of its divisors is an integer number (81561726).

Almost surely, 2^163123451 is an apocalyptic number.

163123451 is a deficient number, since it is larger than the sum of its proper divisors (1).

163123451 is an equidigital number, since it uses as much as digits as its factorization.

163123451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 163123451 is about 12771.9791340262. The cubic root of 163123451 is about 546.3934278385.

The spelling of 163123451 in words is "one hundred sixty-three million, one hundred twenty-three thousand, four hundred fifty-one".