231532434 has 48 divisors (see below), whose sum is σ = 585531648. Its totient is φ = 64742976.

The previous prime is 231532403. The next prime is 231532447. The reversal of 231532434 is 434235132.

It is a junction number, because it is equal to n+sod(n) for n = 231532398 and 231532407.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13627 + ... + 25470.

It is an arithmetic number, because the mean of its divisors is an integer number (12198576).

Almost surely, 2^231532434 is an apocalyptic number.

231532434 is an abundant number, since it is smaller than the sum of its proper divisors (353999214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231532434 is a wasteful number, since it uses less digits than its factorization.

231532434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39159 (or 39156 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 231532434 is about 15216.1898647460. The cubic root of 231532434 is about 614.0502970323.

Adding to 231532434 its reverse (434235132), we get a palindrome (665767566).

The spelling of 231532434 in words is "two hundred thirty-one million, five hundred thirty-two thousand, four hundred thirty-four".