1231002959 has 2 divisors, whose sum is σ = 1231002960. Its totient is φ = 1231002958.

The previous prime is 1231002953. The next prime is 1231003009. The reversal of 1231002959 is 9592001321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1231002959 - 2⁴ = 1231002943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231002953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615501479 + 615501480.

It is an arithmetic number, because the mean of its divisors is an integer number (615501480).

Almost surely, 2^1231002959 is an apocalyptic number.

1231002959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231002959 is an equidigital number, since it uses as much as digits as its factorization.

1231002959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 1231002959 is about 35085.6517539578. The cubic root of 1231002959 is about 1071.7324132442.

The spelling of 1231002959 in words is "one billion, two hundred thirty-one million, two thousand, nine hundred fifty-nine".