1133203991 has 2 divisors, whose sum is σ = 1133203992. Its totient is φ = 1133203990.

The previous prime is 1133203979. The next prime is 1133203999. The reversal of 1133203991 is 1993023311.

It is a strong prime.

It is an emirp because it is prime and its reverse (1993023311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1133203991 - 2⁶ = 1133203927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1133203999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566601995 + 566601996.

It is an arithmetic number, because the mean of its divisors is an integer number (566601996).

Almost surely, 2^1133203991 is an apocalyptic number.

1133203991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1133203991 is an equidigital number, since it uses as much as digits as its factorization.

1133203991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 1133203991 is about 33663.0953864911. The cubic root of 1133203991 is about 1042.5639373668.

The spelling of 1133203991 in words is "one billion, one hundred thirty-three million, two hundred three thousand, nine hundred ninety-one".