1231004069 has 2 divisors, whose sum is σ = 1231004070. Its totient is φ = 1231004068.

The previous prime is 1231004003. The next prime is 1231004081. The reversal of 1231004069 is 9604001321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1192873444 + 38130625 = 34538^2 + 6175^2 .

It is an emirp because it is prime and its reverse (9604001321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231004069 is a prime.

It is a super-2 number, since 2×1231004069² = 3030742035789113522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231004669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615502034 + 615502035.

It is an arithmetic number, because the mean of its divisors is an integer number (615502035).

Almost surely, 2^1231004069 is an apocalyptic number.

It is an amenable number.

1231004069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231004069 is an equidigital number, since it uses as much as digits as its factorization.

1231004069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1231004069 is about 35085.6675723863. The cubic root of 1231004069 is about 1071.7327353725.

The spelling of 1231004069 in words is "one billion, two hundred thirty-one million, four thousand, sixty-nine".