1240231361 has 2 divisors, whose sum is σ = 1240231362. Its totient is φ = 1240231360.

The previous prime is 1240231331. The next prime is 1240231373. The reversal of 1240231361 is 1631320421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1226400400 + 13830961 = 35020^2 + 3719^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240231361 - 2³⁰ = 166489537 is a prime.

It is not a weakly prime, because it can be changed into another prime (1240231301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620115680 + 620115681.

It is an arithmetic number, because the mean of its divisors is an integer number (620115681).

Almost surely, 2^1240231361 is an apocalyptic number.

It is an amenable number.

1240231361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240231361 is an equidigital number, since it uses as much as digits as its factorization.

1240231361 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 23.

The square root of 1240231361 is about 35216.9186755457. The cubic root of 1240231361 is about 1074.4038839572.

Adding to 1240231361 its reverse (1631320421), we get a palindrome (2871551782).

The spelling of 1240231361 in words is "one billion, two hundred forty million, two hundred thirty-one thousand, three hundred sixty-one".