231140501 has 8 divisors (see below), whose sum is σ = 246322944. Its totient is φ = 216385840.

The previous prime is 231140489. The next prime is 231140521. The reversal of 231140501 is 105041132.

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

It is not a de Polignac number, because 231140501 - 2¹⁰ = 231139477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231140501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231140521) 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, 105830 + ... + 107991.

It is an arithmetic number, because the mean of its divisors is an integer number (30790368).

Almost surely, 2^231140501 is an apocalyptic number.

It is an amenable number.

231140501 is a deficient number, since it is larger than the sum of its proper divisors (15182443).

231140501 is a wasteful number, since it uses less digits than its factorization.

231140501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213891.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 231140501 is about 15203.3055945081. The cubic root of 231140501 is about 613.7036177398.

Adding to 231140501 its reverse (105041132), we get a palindrome (336181633).

The spelling of 231140501 in words is "two hundred thirty-one million, one hundred forty thousand, five hundred one".