1131025403 has 2 divisors, whose sum is σ = 1131025404. Its totient is φ = 1131025402.

The previous prime is 1131025397. The next prime is 1131025429. The reversal of 1131025403 is 3045201311.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131025403 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1131025463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565512701 + 565512702.

It is an arithmetic number, because the mean of its divisors is an integer number (565512702).

Almost surely, 2^1131025403 is an apocalyptic number.

1131025403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131025403 is an equidigital number, since it uses as much as digits as its factorization.

1131025403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1131025403 is about 33630.7211192386. The cubic root of 1131025403 is about 1041.8953980171.

Adding to 1131025403 its reverse (3045201311), we get a palindrome (4176226714).

The spelling of 1131025403 in words is "one billion, one hundred thirty-one million, twenty-five thousand, four hundred three".