13151281 has 8 divisors (see below), whose sum is σ = 15450624. Its totient is φ = 11035920.

The previous prime is 13151273. The next prime is 13151291. The reversal of 13151281 is 18215131.

It is the 1481-st star number.

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

It is a cyclic number.

It is not a de Polignac number, because 13151281 - 2³ = 13151273 is a prime.

It is a super-2 number, since 2×13151281² = 345912383881922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13151291) 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, 45841 + ... + 46126.

It is an arithmetic number, because the mean of its divisors is an integer number (1931328).

Almost surely, 2^13151281 is an apocalyptic number.

13151281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13151281 is a deficient number, since it is larger than the sum of its proper divisors (2299343).

13151281 is a wasteful number, since it uses less digits than its factorization.

13151281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91991.

The product of its digits is 240, while the sum is 22.

The square root of 13151281 is about 3626.4694952529. The cubic root of 13151281 is about 236.0420362256.

The spelling of 13151281 in words is "thirteen million, one hundred fifty-one thousand, two hundred eighty-one".