1232551993 has 2 divisors, whose sum is σ = 1232551994. Its totient is φ = 1232551992.

The previous prime is 1232551987. The next prime is 1232552023. The reversal of 1232551993 is 3991552321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 775789609 + 456762384 = 27853^2 + 21372^2 .

It is an emirp because it is prime and its reverse (3991552321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1232551993 - 2¹³ = 1232543801 is a prime.

It is not a weakly prime, because it can be changed into another prime (1232551913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616275996 + 616275997.

It is an arithmetic number, because the mean of its divisors is an integer number (616275997).

Almost surely, 2^1232551993 is an apocalyptic number.

It is an amenable number.

1232551993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232551993 is an equidigital number, since it uses as much as digits as its factorization.

1232551993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72900, while the sum is 40.

The square root of 1232551993 is about 35107.7198490588. The cubic root of 1232551993 is about 1072.1817633915.

The spelling of 1232551993 in words is "one billion, two hundred thirty-two million, five hundred fifty-one thousand, nine hundred ninety-three".