1131222403 has 2 divisors, whose sum is σ = 1131222404. Its totient is φ = 1131222402.

The previous prime is 1131222373. The next prime is 1131222413. The reversal of 1131222403 is 3042221311.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131222403 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131222413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565611201 + 565611202.

It is an arithmetic number, because the mean of its divisors is an integer number (565611202).

Almost surely, 2^1131222403 is an apocalyptic number.

1131222403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131222403 is an equidigital number, since it uses as much as digits as its factorization.

1131222403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1131222403 is about 33633.6498614111. The cubic root of 1131222403 is about 1041.9558863365.

Adding to 1131222403 its reverse (3042221311), we get a palindrome (4173443714).

The spelling of 1131222403 in words is "one billion, one hundred thirty-one million, two hundred twenty-two thousand, four hundred three".