13131898 has 8 divisors (see below), whose sum is σ = 21213108. Its totient is φ = 6060864.

The previous prime is 13131883. The next prime is 13131901. The reversal of 13131898 is 89813131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9223369 + 3908529 = 3037^2 + 1977^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252511 + ... + 252562.

Almost surely, 2^13131898 is an apocalyptic number.

13131898 is a deficient number, since it is larger than the sum of its proper divisors (8081210).

13131898 is a wasteful number, since it uses less digits than its factorization.

13131898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505088.

The product of its digits is 5184, while the sum is 34.

The square root of 13131898 is about 3623.7960759403. The cubic root of 13131898 is about 235.9260157824.

The spelling of 13131898 in words is "thirteen million, one hundred thirty-one thousand, eight hundred ninety-eight".