1230155117 has 2 divisors, whose sum is σ = 1230155118. Its totient is φ = 1230155116.

The previous prime is 1230155093. The next prime is 1230155141. The reversal of 1230155117 is 7115510321.

It is a balanced prime because it is at equal distance from previous prime (1230155093) and next prime (1230155141).

It can be written as a sum of positive squares in only one way, i.e., 1229834761 + 320356 = 35069^2 + 566^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230155117 - 2²⁶ = 1163046253 is a prime.

It is a super-2 number, since 2×1230155117² = 3026563223762567378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230155167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615077558 + 615077559.

It is an arithmetic number, because the mean of its divisors is an integer number (615077559).

Almost surely, 2^1230155117 is an apocalyptic number.

It is an amenable number.

1230155117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230155117 is an equidigital number, since it uses as much as digits as its factorization.

1230155117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050, while the sum is 26.

The square root of 1230155117 is about 35073.5672123609. The cubic root of 1230155117 is about 1071.4863081107.

Adding to 1230155117 its reverse (7115510321), we get a palindrome (8345665438).

The spelling of 1230155117 in words is "one billion, two hundred thirty million, one hundred fifty-five thousand, one hundred seventeen".