13798531 has 4 divisors (see below), whose sum is σ = 13890064. Its totient is φ = 13707000.

The previous prime is 13798523. The next prime is 13798537. The reversal of 13798531 is 13589731.

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: 13589731 = 19 ⋅715249.

It is a cyclic number.

It is not a de Polignac number, because 13798531 - 2³ = 13798523 is a prime.

It is a super-2 number, since 2×13798531² = 380798915515922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13798537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45540 + ... + 45841.

It is an arithmetic number, because the mean of its divisors is an integer number (3472516).

Almost surely, 2^13798531 is an apocalyptic number.

13798531 is a deficient number, since it is larger than the sum of its proper divisors (91533).

13798531 is an equidigital number, since it uses as much as digits as its factorization.

13798531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91532.

The product of its digits is 22680, while the sum is 37.

The square root of 13798531 is about 3714.6373981857. The cubic root of 13798531 is about 239.8525193450.

The spelling of 13798531 in words is "thirteen million, seven hundred ninety-eight thousand, five hundred thirty-one".