1143233137 has 2 divisors, whose sum is σ = 1143233138. Its totient is φ = 1143233136.

The previous prime is 1143233111. The next prime is 1143233149. The reversal of 1143233137 is 7313323411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1091046961 + 52186176 = 33031^2 + 7224^2 .

It is an emirp because it is prime and its reverse (7313323411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1143233137 - 2¹⁵ = 1143200369 is a prime.

It is not a weakly prime, because it can be changed into another prime (1143233197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571616568 + 571616569.

It is an arithmetic number, because the mean of its divisors is an integer number (571616569).

Almost surely, 2^1143233137 is an apocalyptic number.

It is an amenable number.

1143233137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143233137 is an equidigital number, since it uses as much as digits as its factorization.

1143233137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 28.

The square root of 1143233137 is about 33811.7307601962. The cubic root of 1143233137 is about 1045.6305610374.

Adding to 1143233137 its reverse (7313323411), we get a palindrome (8456556548).

The spelling of 1143233137 in words is "one billion, one hundred forty-three million, two hundred thirty-three thousand, one hundred thirty-seven".