1201203243 has 32 divisors (see below), whose sum is σ = 1819564800. Its totient is φ = 782949888.

The previous prime is 1201203233. The next prime is 1201203251. The reversal of 1201203243 is 3423021021.

It is not a de Polignac number, because 1201203243 - 2⁸ = 1201202987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201203233) 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, 305496 + ... + 309402.

It is an arithmetic number, because the mean of its divisors is an integer number (56861400).

Almost surely, 2^1201203243 is an apocalyptic number.

1201203243 is a deficient number, since it is larger than the sum of its proper divisors (618361557).

1201203243 is a wasteful number, since it uses less digits than its factorization.

1201203243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4168 (or 4162 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1201203243 is about 34658.3791167446. The cubic root of 1201203243 is about 1063.0136273378.

Adding to 1201203243 its reverse (3423021021), we get a palindrome (4624224264).

The spelling of 1201203243 in words is "one billion, two hundred one million, two hundred three thousand, two hundred forty-three".