163313943 has 8 divisors (see below), whose sum is σ = 234502128. Its totient is φ = 100500864.

The previous prime is 163313933. The next prime is 163313963. The reversal of 163313943 is 349313361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163313943 - 2⁶ = 163313879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163313933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2093730 + ... + 2093807.

It is an arithmetic number, because the mean of its divisors is an integer number (29312766).

Almost surely, 2^163313943 is an apocalyptic number.

163313943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

163313943 is a deficient number, since it is larger than the sum of its proper divisors (71188185).

163313943 is a wasteful number, since it uses less digits than its factorization.

163313943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4187553.

The product of its digits is 17496, while the sum is 33.

The square root of 163313943 is about 12779.4343771546. The cubic root of 163313943 is about 546.6060338678.

It can be divided in two parts, 1633 and 13943, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 163313943 in words is "one hundred sixty-three million, three hundred thirteen thousand, nine hundred forty-three".