231434431332 has 24 divisors (see below), whose sum is σ = 581553186816. Its totient is φ = 71210594208.

The previous prime is 231434431289. The next prime is 231434431337. The reversal of 231434431332 is 233134434132.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 231434431293 and 231434431302.

It is not an unprimeable number, because it can be changed into a prime (231434431337) 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, 741776868 + ... + 741777179.

It is an arithmetic number, because the mean of its divisors is an integer number (24231382784).

Almost surely, 2^231434431332 is an apocalyptic number.

It is an amenable number.

231434431332 is an abundant number, since it is smaller than the sum of its proper divisors (350118755484).

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

231434431332 is a wasteful number, since it uses less digits than its factorization.

231434431332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483554067 (or 1483554065 counting only the distinct ones).

The product of its digits is 62208, while the sum is 33.

Adding to 231434431332 its reverse (233134434132), we get a palindrome (464568865464).

The spelling of 231434431332 in words is "two hundred thirty-one billion, four hundred thirty-four million, four hundred thirty-one thousand, three hundred thirty-two".