240311630646431 has 2 divisors, whose sum is σ = 240311630646432. Its totient is φ = 240311630646430.

The previous prime is 240311630646427. The next prime is 240311630646463. The reversal of 240311630646431 is 134646036113042.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240311630646431 - 2² = 240311630646427 is a prime.

It is a super-2 number, since 2×240311630646431² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240311630648431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120155815323215 + 120155815323216.

It is an arithmetic number, because the mean of its divisors is an integer number (120155815323216).

Almost surely, 2^{240311630646431} is an apocalyptic number.

240311630646431 is a deficient number, since it is larger than the sum of its proper divisors (1).

240311630646431 is an equidigital number, since it uses as much as digits as its factorization.

240311630646431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 44.

Adding to 240311630646431 its reverse (134646036113042), we get a palindrome (374957666759473).

The spelling of 240311630646431 in words is "two hundred forty trillion, three hundred eleven billion, six hundred thirty million, six hundred forty-six thousand, four hundred thirty-one".