13119381 has 32 divisors (see below), whose sum is σ = 21411840. Its totient is φ = 7873200.

The previous prime is 13119371. The next prime is 13119383. The reversal of 13119381 is 18391131.

It is a happy number.

13119381 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 not a de Polignac number, because 13119381 - 2²¹ = 11022229 is a prime.

It is a super-2 number, since 2×13119381² = 344236315646322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13119383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48276 + ... + 48546.

It is an arithmetic number, because the mean of its divisors is an integer number (669120).

Almost surely, 2^13119381 is an apocalyptic number.

13119381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13119381 is a deficient number, since it is larger than the sum of its proper divisors (8292459).

13119381 is a wasteful number, since it uses less digits than its factorization.

13119381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 448 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 13119381 is about 3622.0686078538. The cubic root of 13119381 is about 235.8510323412.

The spelling of 13119381 in words is "thirteen million, one hundred nineteen thousand, three hundred eighty-one".