1331323125346 has 4 divisors (see below), whose sum is σ = 1996984688022. Its totient is φ = 665661562672.

The previous prime is 1331323125337. The next prime is 1331323125347. The reversal of 1331323125346 is 6435213231331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 749704881025 + 581618244321 = 865855^2 + 762639^2 .

It is not an unprimeable number, because it can be changed into a prime (1331323125347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332830781335 + ... + 332830781338.

Almost surely, 2^{1331323125346} is an apocalyptic number.

1331323125346 is a deficient number, since it is larger than the sum of its proper divisors (665661562676).

1331323125346 is an equidigital number, since it uses as much as digits as its factorization.

1331323125346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665661562675.

The product of its digits is 116640, while the sum is 37.

Adding to 1331323125346 its reverse (6435213231331), we get a palindrome (7766536356677).

The spelling of 1331323125346 in words is "one trillion, three hundred thirty-one billion, three hundred twenty-three million, one hundred twenty-five thousand, three hundred forty-six".