1331324142420 has 24 divisors (see below), whose sum is σ = 3727707598944. Its totient is φ = 355019771296.

The previous prime is 1331324142409. The next prime is 1331324142439. The reversal of 1331324142420 is 242414231331.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11094367794 + ... + 11094367913.

It is an arithmetic number, because the mean of its divisors is an integer number (155321149956).

Almost surely, 2^{1331324142420} is an apocalyptic number.

1331324142420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331324142420 is an abundant number, since it is smaller than the sum of its proper divisors (2396383456524).

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

1331324142420 is a wasteful number, since it uses less digits than its factorization.

1331324142420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22188735719 (or 22188735717 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 1331324142420 its reverse (242414231331), we get a palindrome (1573738373751).

The spelling of 1331324142420 in words is "one trillion, three hundred thirty-one billion, three hundred twenty-four million, one hundred forty-two thousand, four hundred twenty".