231434545 has 8 divisors (see below), whose sum is σ = 284495400. Its totient is φ = 180631680.

The previous prime is 231434543. The next prime is 231434563. The reversal of 231434545 is 545434132.

It can be written as a sum of positive squares in 4 ways, for example, as 2093809 + 229340736 = 1447^2 + 15144^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231434545 - 2¹ = 231434543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231434543) 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, 564270 + ... + 564679.

It is an arithmetic number, because the mean of its divisors is an integer number (35561925).

Almost surely, 2^231434545 is an apocalyptic number.

It is an amenable number.

231434545 is a deficient number, since it is larger than the sum of its proper divisors (53060855).

231434545 is a wasteful number, since it uses less digits than its factorization.

231434545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128995.

The product of its digits is 28800, while the sum is 31.

The square root of 231434545 is about 15212.9729178751. The cubic root of 231434545 is about 613.9637472539.

Adding to 231434545 its reverse (545434132), we get a palindrome (776868677).

The spelling of 231434545 in words is "two hundred thirty-one million, four hundred thirty-four thousand, five hundred forty-five".