231532346 has 12 divisors (see below), whose sum is σ = 359689902. Its totient is φ = 111773424.

The previous prime is 231532337. The next prime is 231532351. The reversal of 231532346 is 643235132.

It can be written as a sum of positive squares in 3 ways, for example, as 196308121 + 35224225 = 14011^2 + 5935^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67145 + ... + 70508.

Almost surely, 2^231532346 is an apocalyptic number.

231532346 is a deficient number, since it is larger than the sum of its proper divisors (128157556).

231532346 is a wasteful number, since it uses less digits than its factorization.

231532346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137713 (or 137684 counting only the distinct ones).

The product of its digits is 12960, while the sum is 29.

The square root of 231532346 is about 15216.1869730889. The cubic root of 231532346 is about 614.0502192370.

Adding to 231532346 its reverse (643235132), we get a palindrome (874767478).

The spelling of 231532346 in words is "two hundred thirty-one million, five hundred thirty-two thousand, three hundred forty-six".