13131019 has 4 divisors (see below), whose sum is σ = 14324760. Its totient is φ = 11937280.

The previous prime is 13131017. The next prime is 13131023. The reversal of 13131019 is 91013131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91013131 = 11 ⋅8273921.

It is a cyclic number.

It is not a de Polignac number, because 13131019 - 2¹ = 13131017 is a prime.

It is a super-2 number, since 2×13131019² = 344847319956722, 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 = 13130987 and 13131005.

It is not an unprimeable number, because it can be changed into a prime (13131017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596854 + ... + 596875.

It is an arithmetic number, because the mean of its divisors is an integer number (3581190).

Almost surely, 2^13131019 is an apocalyptic number.

13131019 is a deficient number, since it is larger than the sum of its proper divisors (1193741).

13131019 is a wasteful number, since it uses less digits than its factorization.

13131019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193740.

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 13131019 is about 3623.6747922516. The cubic root of 13131019 is about 235.9207516641.

It can be divided in two parts, 1313 and 1019, that added together give a palindrome (2332).

The spelling of 13131019 in words is "thirteen million, one hundred thirty-one thousand, nineteen".