231131342 has 32 divisors (see below), whose sum is σ = 379499904. Its totient is φ = 104940000.

The previous prime is 231131323. The next prime is 231131377. The reversal of 231131342 is 243131132.

It is a congruent number.

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, 698117 + ... + 698447.

It is an arithmetic number, because the mean of its divisors is an integer number (11859372).

Almost surely, 2^231131342 is an apocalyptic number.

231131342 is a deficient number, since it is larger than the sum of its proper divisors (148368562).

231131342 is a wasteful number, since it uses less digits than its factorization.

231131342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704.

The product of its digits is 432, while the sum is 20.

The square root of 231131342 is about 15203.0043741361. The cubic root of 231131342 is about 613.6955115797.

Adding to 231131342 its reverse (243131132), we get a palindrome (474262474).

The spelling of 231131342 in words is "two hundred thirty-one million, one hundred thirty-one thousand, three hundred forty-two".