230155511 has 4 divisors (see below), whose sum is σ = 231567672. Its totient is φ = 228743352.

The previous prime is 230155507. The next prime is 230155529. The reversal of 230155511 is 115551032.

It is a happy number.

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 230155511 - 2² = 230155507 is a prime.

It is a super-2 number, since 2×230155511² = 105943118487342242, 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 (230155561) 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, 705836 + ... + 706161.

It is an arithmetic number, because the mean of its divisors is an integer number (57891918).

Almost surely, 2^230155511 is an apocalyptic number.

230155511 is a deficient number, since it is larger than the sum of its proper divisors (1412161).

230155511 is a wasteful number, since it uses less digits than its factorization.

230155511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412160.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 230155511 is about 15170.8770675924. The cubic root of 230155511 is about 612.8306239979.

The spelling of 230155511 in words is "two hundred thirty million, one hundred fifty-five thousand, five hundred eleven".