1213422431500 has 48 divisors (see below), whose sum is σ = 2789594327520. Its totient is φ = 459823233600.

The previous prime is 1213422431407. The next prime is 1213422431537. The reversal of 1213422431500 is 51342243121.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 63854839 + ... + 63873838.

It is an arithmetic number, because the mean of its divisors is an integer number (58116548490).

Almost surely, 2^{1213422431500} is an apocalyptic number.

1213422431500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213422431500 is an abundant number, since it is smaller than the sum of its proper divisors (1576171896020).

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

1213422431500 is a wasteful number, since it uses less digits than its factorization.

1213422431500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127728715 (or 127728703 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 1213422431500 its reverse (51342243121), we get a palindrome (1264764674621).

The spelling of 1213422431500 in words is "one trillion, two hundred thirteen billion, four hundred twenty-two million, four hundred thirty-one thousand, five hundred".