163123481 has 4 divisors (see below), whose sum is σ = 163152000. Its totient is φ = 163094964.

The previous prime is 163123451. The next prime is 163123487. The reversal of 163123481 is 184321361.

163123481 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163123481 - 2¹⁴ = 163107097 is a prime.

It is a super-2 number, since 2×163123481² = 53218540107114722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163123487) 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, 2381 + ... + 18218.

It is an arithmetic number, because the mean of its divisors is an integer number (40788000).

Almost surely, 2^163123481 is an apocalyptic number.

It is an amenable number.

163123481 is a deficient number, since it is larger than the sum of its proper divisors (28519).

163123481 is an equidigital number, since it uses as much as digits as its factorization.

163123481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28518.

The product of its digits is 3456, while the sum is 29.

The square root of 163123481 is about 12771.9803084721. The cubic root of 163123481 is about 546.3934613342.

The spelling of 163123481 in words is "one hundred sixty-three million, one hundred twenty-three thousand, four hundred eighty-one".