1240243431003 has 32 divisors (see below), whose sum is σ = 1898474547200. Its totient is φ = 799395156000.

The previous prime is 1240243430981. The next prime is 1240243431059. The reversal of 1240243431003 is 3001343420421.

1240243431003 is a `hidden beast` number, since 124 + 0 + 2 + 434 + 3 + 100 + 3 = 666.

It is not a de Polignac number, because 1240243431003 - 2¹² = 1240243426907 is a prime.

It is a super-3 number, since 3×1240243431003³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240243431073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174753 + ... + 1584621.

It is an arithmetic number, because the mean of its divisors is an integer number (59327329600).

Almost surely, 2^{1240243431003} is an apocalyptic number.

1240243431003 is a deficient number, since it is larger than the sum of its proper divisors (658231116197).

1240243431003 is a wasteful number, since it uses less digits than its factorization.

1240243431003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410960 (or 1410954 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 1240243431003 its reverse (3001343420421), we get a palindrome (4241586851424).

The spelling of 1240243431003 in words is "one trillion, two hundred forty billion, two hundred forty-three million, four hundred thirty-one thousand, three".