235155231 has 24 divisors (see below), whose sum is σ = 352969344. Its totient is φ = 156449880.

The previous prime is 235155211. The next prime is 235155233. The reversal of 235155231 is 132551532.

It is a happy number.

235155231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 235155231 - 2⁵ = 235155199 is a prime.

It is a super-2 number, since 2×235155231² = 110595965333326722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 235155195 and 235155204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235155233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 214996 + ... + 216086.

It is an arithmetic number, because the mean of its divisors is an integer number (14707056).

Almost surely, 2^235155231 is an apocalyptic number.

235155231 is a deficient number, since it is larger than the sum of its proper divisors (117814113).

235155231 is an equidigital number, since it uses as much as digits as its factorization.

235155231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993 (or 1981 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 235155231 is about 15334.7719578740. The cubic root of 235155231 is about 617.2364261649.

The spelling of 235155231 in words is "two hundred thirty-five million, one hundred fifty-five thousand, two hundred thirty-one".