231336530 has 32 divisors (see below), whose sum is σ = 437453568. Its totient is φ = 87912000.

The previous prime is 231336439. The next prime is 231336541. The reversal of 231336530 is 35633132.

It is a super-2 number, since 2×231336530² = 107033180224881800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 231336530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31400 + ... + 38060.

It is an arithmetic number, because the mean of its divisors is an integer number (13670424).

Almost surely, 2^231336530 is an apocalyptic number.

231336530 is a deficient number, since it is larger than the sum of its proper divisors (206117038).

231336530 is a wasteful number, since it uses less digits than its factorization.

231336530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6842.

The product of its (nonzero) digits is 4860, while the sum is 26.

The square root of 231336530 is about 15209.7511485231. The cubic root of 231336530 is about 613.8770616153.

Adding to 231336530 its reverse (35633132), we get a palindrome (266969662).

The spelling of 231336530 in words is "two hundred thirty-one million, three hundred thirty-six thousand, five hundred thirty".