1331310130421 has 4 divisors (see below), whose sum is σ = 1409622491052. Its totient is φ = 1252997769792.

The previous prime is 1331310130417. The next prime is 1331310130459. The reversal of 1331310130421 is 1240310131331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1138672531396 + 192637599025 = 1067086^2 + 438905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331310130421 - 2² = 1331310130417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331310130471) 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, 39156180290 + ... + 39156180323.

It is an arithmetic number, because the mean of its divisors is an integer number (352405622763).

Almost surely, 2^{1331310130421} is an apocalyptic number.

It is an amenable number.

1331310130421 is a deficient number, since it is larger than the sum of its proper divisors (78312360631).

1331310130421 is an equidigital number, since it uses as much as digits as its factorization.

1331310130421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78312360630.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1331310130421 its reverse (1240310131331), we get a palindrome (2571620261752).

The spelling of 1331310130421 in words is "one trillion, three hundred thirty-one billion, three hundred ten million, one hundred thirty thousand, four hundred twenty-one".