13154981 has 12 divisors (see below), whose sum is σ = 15535008. Its totient is φ = 11104632.

The previous prime is 13154963. The next prime is 13155013. The reversal of 13154981 is 18945131.

13154981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13154981 - 2¹⁸ = 12892837 is a prime.

It is a super-2 number, since 2×13154981² = 346107050220722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13150981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1280 + ... + 5286.

It is an arithmetic number, because the mean of its divisors is an integer number (1294584).

Almost surely, 2^13154981 is an apocalyptic number.

It is an amenable number.

13154981 is a deficient number, since it is larger than the sum of its proper divisors (2380027).

13154981 is an equidigital number, since it uses as much as digits as its factorization.

13154981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4088 (or 4081 counting only the distinct ones).

The product of its digits is 4320, while the sum is 32.

The square root of 13154981 is about 3626.9795974061. The cubic root of 13154981 is about 236.0641702834.

The spelling of 13154981 in words is "thirteen million, one hundred fifty-four thousand, nine hundred eighty-one".