231011135 has 8 divisors (see below), whose sum is σ = 278763120. Its totient is φ = 183775744.

The previous prime is 231011119. The next prime is 231011173. The reversal of 231011135 is 531110132.

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

It is a cyclic number.

It is not a de Polignac number, because 231011135 - 2⁴ = 231011119 is a prime.

It is a super-2 number, since 2×231011135² = 106732288987976450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128162 + ... + 129951.

It is an arithmetic number, because the mean of its divisors is an integer number (34845390).

Almost surely, 2^231011135 is an apocalyptic number.

231011135 is a deficient number, since it is larger than the sum of its proper divisors (47751985).

231011135 is a wasteful number, since it uses less digits than its factorization.

231011135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258297.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 231011135 is about 15199.0504637625. The cubic root of 231011135 is about 613.5891026893.

Adding to 231011135 its reverse (531110132), we get a palindrome (762121267).

The spelling of 231011135 in words is "two hundred thirty-one million, eleven thousand, one hundred thirty-five".