1230232261 has 2 divisors, whose sum is σ = 1230232262. Its totient is φ = 1230232260.

The previous prime is 1230232249. The next prime is 1230232271. The reversal of 1230232261 is 1622320321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1123523361 + 106708900 = 33519^2 + 10330^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230232261 - 2²¹ = 1228135109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230232271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615116130 + 615116131.

It is an arithmetic number, because the mean of its divisors is an integer number (615116131).

Almost surely, 2^1230232261 is an apocalyptic number.

It is an amenable number.

1230232261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230232261 is an equidigital number, since it uses as much as digits as its factorization.

1230232261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1230232261 is about 35074.6669406853. Note that the first 3 decimals coincide. The cubic root of 1230232261 is about 1071.5087055603.

Adding to 1230232261 its reverse (1622320321), we get a palindrome (2852552582).

The spelling of 1230232261 in words is "one billion, two hundred thirty million, two hundred thirty-two thousand, two hundred sixty-one".