1232311232261 has 2 divisors, whose sum is σ = 1232311232262. Its totient is φ = 1232311232260.

The previous prime is 1232311232237. The next prime is 1232311232333. The reversal of 1232311232261 is 1622321132321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 690145562500 + 542165669761 = 830750^2 + 736319^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232311232261 - 2²² = 1232307037957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1232311202261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616155616130 + 616155616131.

It is an arithmetic number, because the mean of its divisors is an integer number (616155616131).

Almost surely, 2^{1232311232261} is an apocalyptic number.

It is an amenable number.

1232311232261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232311232261 is an equidigital number, since it uses as much as digits as its factorization.

1232311232261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

Adding to 1232311232261 its reverse (1622321132321), we get a palindrome (2854632364582).

The spelling of 1232311232261 in words is "one trillion, two hundred thirty-two billion, three hundred eleven million, two hundred thirty-two thousand, two hundred sixty-one".