1231303003 has 4 divisors (see below), whose sum is σ = 1407203440. Its totient is φ = 1055402568.

The previous prime is 1231302977. The next prime is 1231303033. The reversal of 1231303003 is 3003031321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3003031321 = 67 ⋅44821363.

It is a cyclic number.

It is not a de Polignac number, because 1231303003 - 2⁵ = 1231302971 is a prime.

It is a super-2 number, since 2×1231303003² = 3032214170393636018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231303033) 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, 87950208 + ... + 87950221.

It is an arithmetic number, because the mean of its divisors is an integer number (351800860).

Almost surely, 2^1231303003 is an apocalyptic number.

1231303003 is a deficient number, since it is larger than the sum of its proper divisors (175900437).

1231303003 is an equidigital number, since it uses as much as digits as its factorization.

1231303003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175900436.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 1231303003 is about 35089.9273723956. The cubic root of 1231303003 is about 1071.8194806649.

Adding to 1231303003 its reverse (3003031321), we get a palindrome (4234334324).

The spelling of 1231303003 in words is "one billion, two hundred thirty-one million, three hundred three thousand, three".