1234240011731 has 2 divisors, whose sum is σ = 1234240011732. Its totient is φ = 1234240011730.

The previous prime is 1234240011709. The next prime is 1234240011757. The reversal of 1234240011731 is 1371100424321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1234240011731 is a prime.

It is a super-2 number, since 2×1234240011731² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1234240011694 and 1234240011703.

It is not a weakly prime, because it can be changed into another prime (1234240011791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617120005865 + 617120005866.

It is an arithmetic number, because the mean of its divisors is an integer number (617120005866).

Almost surely, 2^{1234240011731} is an apocalyptic number.

1234240011731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234240011731 is an equidigital number, since it uses as much as digits as its factorization.

1234240011731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 1234240011731 in words is "one trillion, two hundred thirty-four billion, two hundred forty million, eleven thousand, seven hundred thirty-one".