243320341040403 has 32 divisors (see below), whose sum is σ = 361602694126080. Its totient is φ = 144281458314240.

The previous prime is 243320341040401. The next prime is 243320341040419. The reversal of 243320341040403 is 304040143023342.

It is a happy number.

It is not a de Polignac number, because 243320341040403 - 2¹ = 243320341040401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (243320341040401) 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, 193132126 + ... + 194387907.

It is an arithmetic number, because the mean of its divisors is an integer number (11300084191440).

Almost surely, 2^{243320341040403} is an apocalyptic number.

243320341040403 is a deficient number, since it is larger than the sum of its proper divisors (118282353085677).

243320341040403 is a wasteful number, since it uses less digits than its factorization.

243320341040403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387520459.

The product of its (nonzero) digits is 82944, while the sum is 33.

Adding to 243320341040403 its reverse (304040143023342), we get a palindrome (547360484063745).

The spelling of 243320341040403 in words is "two hundred forty-three trillion, three hundred twenty billion, three hundred forty-one million, forty thousand, four hundred three".