1231152303 has 16 divisors (see below), whose sum is σ = 1715682816. Its totient is φ = 783810720.

The previous prime is 1231152287. The next prime is 1231152311. The reversal of 1231152303 is 3032511321.

It is not a de Polignac number, because 1231152303 - 2⁴ = 1231152287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1231152303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231152313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29401 + ... + 57677.

It is an arithmetic number, because the mean of its divisors is an integer number (107230176).

Almost surely, 2^1231152303 is an apocalyptic number.

1231152303 is a deficient number, since it is larger than the sum of its proper divisors (484530513).

1231152303 is a wasteful number, since it uses less digits than its factorization.

1231152303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28934.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1231152303 is about 35087.7799668204. The cubic root of 1231152303 is about 1071.7757519793.

Adding to 1231152303 its reverse (3032511321), we get a palindrome (4263663624).

The spelling of 1231152303 in words is "one billion, two hundred thirty-one million, one hundred fifty-two thousand, three hundred three".