1331240020402 has 16 divisors (see below), whose sum is σ = 2037624050880. Its totient is φ = 652070119792.

The previous prime is 1331240020373. The next prime is 1331240020403. The reversal of 1331240020402 is 2040200421331.

It is not an unprimeable number, because it can be changed into a prime (1331240020403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9458878 + ... + 9598585.

It is an arithmetic number, because the mean of its divisors is an integer number (127351503180).

Almost surely, 2^{1331240020402} is an apocalyptic number.

1331240020402 is a deficient number, since it is larger than the sum of its proper divisors (706384030478).

1331240020402 is a wasteful number, since it uses less digits than its factorization.

1331240020402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19058177.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1331240020402 its reverse (2040200421331), we get a palindrome (3371440441733).

The spelling of 1331240020402 in words is "one trillion, three hundred thirty-one billion, two hundred forty million, twenty thousand, four hundred two".