1231032403 has 2 divisors, whose sum is σ = 1231032404. Its totient is φ = 1231032402.

The previous prime is 1231032371. The next prime is 1231032437. The reversal of 1231032403 is 3042301321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1231032403 - 2⁵ = 1231032371 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231032493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615516201 + 615516202.

It is an arithmetic number, because the mean of its divisors is an integer number (615516202).

Almost surely, 2^1231032403 is an apocalyptic number.

1231032403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231032403 is an equidigital number, since it uses as much as digits as its factorization.

1231032403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1231032403 is about 35086.0713531738. The cubic root of 1231032403 is about 1071.7409579942.

Adding to 1231032403 its reverse (3042301321), we get a palindrome (4273333724).

The spelling of 1231032403 in words is "one billion, two hundred thirty-one million, thirty-two thousand, four hundred three".