1331304432131 has 12 divisors (see below), whose sum is σ = 1391760330072. Its totient is φ = 1273369976736.

The previous prime is 1331304432121. The next prime is 1331304432167. The reversal of 1331304432131 is 1312344031331.

It is a de Polignac number, because none of the positive numbers 2^k-1331304432131 is a prime.

It is a super-2 number, since 2×1331304432131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331304432094 and 1331304432103.

It is not an unprimeable number, because it can be changed into a prime (1331304432121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21990455 + ... + 22050911.

It is an arithmetic number, because the mean of its divisors is an integer number (115980027506).

Almost surely, 2^{1331304432131} is an apocalyptic number.

1331304432131 is a deficient number, since it is larger than the sum of its proper divisors (60455897941).

1331304432131 is an equidigital number, since it uses as much as digits as its factorization.

1331304432131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102130 (or 102107 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 1331304432131 its reverse (1312344031331), we get a palindrome (2643648463462).

The spelling of 1331304432131 in words is "one trillion, three hundred thirty-one billion, three hundred four million, four hundred thirty-two thousand, one hundred thirty-one".