1173430681 has 2 divisors, whose sum is σ = 1173430682. Its totient is φ = 1173430680.

The previous prime is 1173430669. The next prime is 1173430711. The reversal of 1173430681 is 1860343711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 978688656 + 194742025 = 31284^2 + 13955^2 .

It is a cyclic number.

It is not a de Polignac number, because 1173430681 - 2²⁷ = 1039212953 is a prime.

It is a super-2 number, since 2×1173430681² = 2753879126224247522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1173430651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586715340 + 586715341.

It is an arithmetic number, because the mean of its divisors is an integer number (586715341).

Almost surely, 2^1173430681 is an apocalyptic number.

It is an amenable number.

1173430681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1173430681 is an equidigital number, since it uses as much as digits as its factorization.

1173430681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1173430681 is about 34255.3744834296. The cubic root of 1173430681 is about 1054.7571541104.

The spelling of 1173430681 in words is "one billion, one hundred seventy-three million, four hundred thirty thousand, six hundred eighty-one".