1231133003 has 4 divisors (see below), whose sum is σ = 1231891320. Its totient is φ = 1230374688.

The previous prime is 1231132961. The next prime is 1231133009. The reversal of 1231133003 is 3003311321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3003311321 = 79 ⋅38016599.

It is a cyclic number.

It is not a de Polignac number, because 1231133003 - 2¹² = 1231128907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231133009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376718 + ... + 379971.

It is an arithmetic number, because the mean of its divisors is an integer number (307972830).

Almost surely, 2^1231133003 is an apocalyptic number.

1231133003 is a deficient number, since it is larger than the sum of its proper divisors (758317).

1231133003 is an equidigital number, since it uses as much as digits as its factorization.

1231133003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758316.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1231133003 is about 35087.5049412180. The cubic root of 1231133003 is about 1071.7701514320.

Adding to 1231133003 its reverse (3003311321), we get a palindrome (4234444324).

The spelling of 1231133003 in words is "one billion, two hundred thirty-one million, one hundred thirty-three thousand, three".