13537231 has 2 divisors, whose sum is σ = 13537232. Its totient is φ = 13537230.

The previous prime is 13537189. The next prime is 13537241. The reversal of 13537231 is 13273531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13537231 - 2⁷ = 13537103 is a prime.

It is a super-2 number, since 2×13537231² = 366513246294722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13537196 and 13537205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13537241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6768615 + 6768616.

It is an arithmetic number, because the mean of its divisors is an integer number (6768616).

Almost surely, 2^13537231 is an apocalyptic number.

13537231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13537231 is an equidigital number, since it uses as much as digits as its factorization.

13537231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 25.

The square root of 13537231 is about 3679.2976231884. The cubic root of 13537231 is about 238.3288477267.

The spelling of 13537231 in words is "thirteen million, five hundred thirty-seven thousand, two hundred thirty-one".