1331320320229 has 4 divisors (see below), whose sum is σ = 1331913866976. Its totient is φ = 1330726773484.

The previous prime is 1331320320223. The next prime is 1331320320233. The reversal of 1331320320229 is 9220230231331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1331320320229 - 2¹³ = 1331320312037 is a prime.

It is a super-2 number, since 2×1331320320229² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331320320229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331320320223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296770009 + ... + 296774494.

It is an arithmetic number, because the mean of its divisors is an integer number (332978466744).

Almost surely, 2^{1331320320229} is an apocalyptic number.

It is an amenable number.

1331320320229 is a deficient number, since it is larger than the sum of its proper divisors (593546747).

1331320320229 is an equidigital number, since it uses as much as digits as its factorization.

1331320320229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593546746.

The product of its (nonzero) digits is 11664, while the sum is 31.

The spelling of 1331320320229 in words is "one trillion, three hundred thirty-one billion, three hundred twenty million, three hundred twenty thousand, two hundred twenty-nine".