1231383793 has 2 divisors, whose sum is σ = 1231383794. Its totient is φ = 1231383792.

The previous prime is 1231383773. The next prime is 1231383799. The reversal of 1231383793 is 3973831321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1223810289 + 7573504 = 34983^2 + 2752^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231383793 - 2²⁹ = 694512881 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231383799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615691896 + 615691897.

It is an arithmetic number, because the mean of its divisors is an integer number (615691897).

Almost surely, 2^1231383793 is an apocalyptic number.

It is an amenable number.

1231383793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231383793 is an equidigital number, since it uses as much as digits as its factorization.

1231383793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 40.

The square root of 1231383793 is about 35091.0785385687. The cubic root of 1231383793 is about 1071.8429220659.

The spelling of 1231383793 in words is "one billion, two hundred thirty-one million, three hundred eighty-three thousand, seven hundred ninety-three".