1240023440351 has 2 divisors, whose sum is σ = 1240023440352. Its totient is φ = 1240023440350.

The previous prime is 1240023440297. The next prime is 1240023440377. The reversal of 1240023440351 is 1530443200421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240023440351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240023448351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620011720175 + 620011720176.

It is an arithmetic number, because the mean of its divisors is an integer number (620011720176).

Almost surely, 2^{1240023440351} is an apocalyptic number.

1240023440351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240023440351 is an equidigital number, since it uses as much as digits as its factorization.

1240023440351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 1240023440351 its reverse (1530443200421), we get a palindrome (2770466640772).

The spelling of 1240023440351 in words is "one trillion, two hundred forty billion, twenty-three million, four hundred forty thousand, three hundred fifty-one".