1240331850731 has 2 divisors, whose sum is σ = 1240331850732. Its totient is φ = 1240331850730.

The previous prime is 1240331850689. The next prime is 1240331850763. The reversal of 1240331850731 is 1370581330421.

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-1240331850731 is a prime.

It is a super-2 number, since 2×1240331850731² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1240331850781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620165925365 + 620165925366.

It is an arithmetic number, because the mean of its divisors is an integer number (620165925366).

Almost surely, 2^{1240331850731} is an apocalyptic number.

1240331850731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240331850731 is an equidigital number, since it uses as much as digits as its factorization.

1240331850731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 1240331850731 in words is "one trillion, two hundred forty billion, three hundred thirty-one million, eight hundred fifty thousand, seven hundred thirty-one".