231240134 has 8 divisors (see below), whose sum is σ = 346925808. Its totient is φ = 115598200.

The previous prime is 231240131. The next prime is 231240179. The reversal of 231240134 is 431042132.

231240134 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (231240131) 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, 11444 + ... + 24360.

It is an arithmetic number, because the mean of its divisors is an integer number (43365726).

Almost surely, 2^231240134 is an apocalyptic number.

231240134 is a deficient number, since it is larger than the sum of its proper divisors (115685674).

231240134 is a wasteful number, since it uses less digits than its factorization.

231240134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21870.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 231240134 is about 15206.5819302038. The cubic root of 231240134 is about 613.7917839545.

Adding to 231240134 its reverse (431042132), we get a palindrome (662282266).

The spelling of 231240134 in words is "two hundred thirty-one million, two hundred forty thousand, one hundred thirty-four".