231142303545 has 32 divisors (see below), whose sum is σ = 379860257280. Its totient is φ = 119932358400.

The previous prime is 231142303541. The next prime is 231142303583. The reversal of 231142303545 is 545303241132.

It is not a de Polignac number, because 231142303545 - 2² = 231142303541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231142303541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11145696 + ... + 11166414.

It is an arithmetic number, because the mean of its divisors is an integer number (11870633040).

Almost surely, 2^231142303545 is an apocalyptic number.

It is an amenable number.

231142303545 is a deficient number, since it is larger than the sum of its proper divisors (148717953735).

231142303545 is a wasteful number, since it uses less digits than its factorization.

231142303545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40865.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 231142303545 its reverse (545303241132), we get a palindrome (776445544677).

The spelling of 231142303545 in words is "two hundred thirty-one billion, one hundred forty-two million, three hundred three thousand, five hundred forty-five".