135467231 has 4 divisors (see below), whose sum is σ = 136501464. Its totient is φ = 134433000.

The previous prime is 135467221. The next prime is 135467251. The reversal of 135467231 is 132764531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135467231 - 2¹⁰ = 135466207 is a prime.

It is a super-2 number, since 2×135467231² = 36702741349614722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135467201) 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, 516920 + ... + 517181.

It is an arithmetic number, because the mean of its divisors is an integer number (34125366).

Almost surely, 2^135467231 is an apocalyptic number.

135467231 is a deficient number, since it is larger than the sum of its proper divisors (1034233).

135467231 is a wasteful number, since it uses less digits than its factorization.

135467231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034232.

The product of its digits is 15120, while the sum is 32.

The square root of 135467231 is about 11639.0390926399. The cubic root of 135467231 is about 513.5839201669.

The spelling of 135467231 in words is "one hundred thirty-five million, four hundred sixty-seven thousand, two hundred thirty-one".