231242501 has 8 divisors (see below), whose sum is σ = 270723264. Its totient is φ = 193373280.

The previous prime is 231242467. The next prime is 231242507. The reversal of 231242501 is 105242132.

231242501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 231242501 - 2¹⁸ = 230980357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231242507) 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, 402575 + ... + 403148.

It is an arithmetic number, because the mean of its divisors is an integer number (33840408).

Almost surely, 2^231242501 is an apocalyptic number.

It is an amenable number.

231242501 is a deficient number, since it is larger than the sum of its proper divisors (39480763).

231242501 is an equidigital number, since it uses as much as digits as its factorization.

231242501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805771.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 231242501 is about 15206.6597581454. The cubic root of 231242501 is about 613.7938782279.

Adding to 231242501 its reverse (105242132), we get a palindrome (336484633).

The spelling of 231242501 in words is "two hundred thirty-one million, two hundred forty-two thousand, five hundred one".