240311055331 has 2 divisors, whose sum is σ = 240311055332. Its totient is φ = 240311055330.

The previous prime is 240311055289. The next prime is 240311055349. The reversal of 240311055331 is 133550113042.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240311055331 is a prime.

It is a super-2 number, since 2×240311055331² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 240311055331.

It is not a weakly prime, because it can be changed into another prime (240311055371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120155527665 + 120155527666.

It is an arithmetic number, because the mean of its divisors is an integer number (120155527666).

Almost surely, 2^240311055331 is an apocalyptic number.

240311055331 is a deficient number, since it is larger than the sum of its proper divisors (1).

240311055331 is an equidigital number, since it uses as much as digits as its factorization.

240311055331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 240311055331 its reverse (133550113042), we get a palindrome (373861168373).

The spelling of 240311055331 in words is "two hundred forty billion, three hundred eleven million, fifty-five thousand, three hundred thirty-one".