163351123 has 4 divisors (see below), whose sum is σ = 175916608. Its totient is φ = 150785640.

The previous prime is 163351091. The next prime is 163351169. The reversal of 163351123 is 321153361.

163351123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 163351123 - 2⁵ = 163351091 is a prime.

It is a super-2 number, since 2×163351123² = 53367178770722258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163351193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6282723 + ... + 6282748.

It is an arithmetic number, because the mean of its divisors is an integer number (43979152).

Almost surely, 2^163351123 is an apocalyptic number.

163351123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

163351123 is a deficient number, since it is larger than the sum of its proper divisors (12565485).

163351123 is a wasteful number, since it uses less digits than its factorization.

163351123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12565484.

The product of its digits is 1620, while the sum is 25.

The square root of 163351123 is about 12780.8889753413. Note that the first 3 decimals coincide. The cubic root of 163351123 is about 546.6475107720.

The spelling of 163351123 in words is "one hundred sixty-three million, three hundred fifty-one thousand, one hundred twenty-three".