231231434 has 32 divisors (see below), whose sum is σ = 403833600. Its totient is φ = 97257600.

The previous prime is 231231409. The next prime is 231231439. The reversal of 231231434 is 434132132.

It is not an unprimeable number, because it can be changed into a prime (231231439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187532 + ... + 188760.

It is an arithmetic number, because the mean of its divisors is an integer number (12619800).

Almost surely, 2^231231434 is an apocalyptic number.

231231434 is a deficient number, since it is larger than the sum of its proper divisors (172602166).

231231434 is a wasteful number, since it uses less digits than its factorization.

231231434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478.

The product of its digits is 1728, while the sum is 23.

The square root of 231231434 is about 15206.2958671729. The cubic root of 231231434 is about 613.7840862488.

Adding to 231231434 its reverse (434132132), we get a palindrome (665363566).

The spelling of 231231434 in words is "two hundred thirty-one million, two hundred thirty-one thousand, four hundred thirty-four".