13745331 has 12 divisors (see below), whose sum is σ = 19909552. Its totient is φ = 9138096.

The previous prime is 13745309. The next prime is 13745339. The reversal of 13745331 is 13354731.

It is not a de Polignac number, because 13745331 - 2⁷ = 13745203 is a prime.

It is a super-2 number, since 2×13745331² = 377868248599122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13745295 and 13745304.

It is not an unprimeable number, because it can be changed into a prime (13745339) 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, 1650 + ... + 5496.

Almost surely, 2^13745331 is an apocalyptic number.

13745331 is a deficient number, since it is larger than the sum of its proper divisors (6164221).

13745331 is a wasteful number, since it uses less digits than its factorization.

13745331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250 (or 4247 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 13745331 is about 3707.4696222626. The cubic root of 13745331 is about 239.5438732508.

The spelling of 13745331 in words is "thirteen million, seven hundred forty-five thousand, three hundred thirty-one".