13162281 has 8 divisors (see below), whose sum is σ = 19145184. Its totient is φ = 7977120.

The previous prime is 13162277. The next prime is 13162283. The reversal of 13162281 is 18226131.

13162281 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13162281 - 2² = 13162277 is a prime.

It is a super-2 number, since 2×13162281² = 346491282245922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13162283) 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, 199396 + ... + 199461.

It is an arithmetic number, because the mean of its divisors is an integer number (2393148).

Almost surely, 2^13162281 is an apocalyptic number.

13162281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13162281 is a deficient number, since it is larger than the sum of its proper divisors (5982903).

13162281 is a wasteful number, since it uses less digits than its factorization.

13162281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398871.

The product of its digits is 576, while the sum is 24.

The square root of 13162281 is about 3627.9858048234. The cubic root of 13162281 is about 236.1078280123.

The spelling of 13162281 in words is "thirteen million, one hundred sixty-two thousand, two hundred eighty-one".