13136231 has 2 divisors, whose sum is σ = 13136232. Its totient is φ = 13136230.

The previous prime is 13136203. The next prime is 13136251. The reversal of 13136231 is 13263131.

It is a happy number.

13136231 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (13136251) can be obtained adding 13136231 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13136231 - 2¹⁰ = 13135207 is a prime.

It is a super-2 number, since 2×13136231² = 345121129770722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13136251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6568115 + 6568116.

It is an arithmetic number, because the mean of its divisors is an integer number (6568116).

Almost surely, 2^13136231 is an apocalyptic number.

13136231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13136231 is an equidigital number, since it uses as much as digits as its factorization.

13136231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 20.

The square root of 13136231 is about 3624.3938803612. The cubic root of 13136231 is about 235.9519616386.

Adding to 13136231 its reverse (13263131), we get a palindrome (26399362).

It can be divided in two parts, 13136 and 231, that multiplied together give a triangular number (3034416 = T₂₄₆₃).

The spelling of 13136231 in words is "thirteen million, one hundred thirty-six thousand, two hundred thirty-one".