1213023240402 has 8 divisors (see below), whose sum is σ = 2426046480816. Its totient is φ = 404341080132.

The previous prime is 1213023240391. The next prime is 1213023240409. The reversal of 1213023240402 is 2040423203121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1213023240402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1213023240409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101085270028 + ... + 101085270039.

It is an arithmetic number, because the mean of its divisors is an integer number (303255810102).

Almost surely, 2^{1213023240402} is an apocalyptic number.

1213023240402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213023240402 is a wasteful number, since it uses less digits than its factorization.

1213023240402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202170540072.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1213023240402 its reverse (2040423203121), we get a palindrome (3253446443523).

The spelling of 1213023240402 in words is "one trillion, two hundred thirteen billion, twenty-three million, two hundred forty thousand, four hundred two".