230640531 has 8 divisors (see below), whose sum is σ = 335477184. Its totient is φ = 139782120.

The previous prime is 230640523. The next prime is 230640583. The reversal of 230640531 is 135046032.

It is a happy number.

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

It is not a de Polignac number, because 230640531 - 2³ = 230640523 is a prime.

It is a super-2 number, since 2×230640531² = 106390109079923922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (230660531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3494521 + ... + 3494586.

It is an arithmetic number, because the mean of its divisors is an integer number (41934648).

Almost surely, 2^230640531 is an apocalyptic number.

230640531 is a deficient number, since it is larger than the sum of its proper divisors (104836653).

230640531 is a wasteful number, since it uses less digits than its factorization.

230640531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6989121.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 230640531 is about 15186.8538874910. The cubic root of 230640531 is about 613.2608064117.

Adding to 230640531 its reverse (135046032), we get a palindrome (365686563).

The spelling of 230640531 in words is "two hundred thirty million, six hundred forty thousand, five hundred thirty-one".