1321231034131 has 4 divisors (see below), whose sum is σ = 1321243719552. Its totient is φ = 1321218348712.

The previous prime is 1321231034069. The next prime is 1321231034159. The reversal of 1321231034131 is 1314301321231.

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

It is a cyclic number.

It is not a de Polignac number, because 1321231034131 - 2¹⁷ = 1321230903059 is a prime.

It is a super-2 number, since 2×1321231034131² (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 = 1321231034096 and 1321231034105.

It is not an unprimeable number, because it can be changed into a prime (1321231034531) 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, 6185176 + ... + 6395221.

It is an arithmetic number, because the mean of its divisors is an integer number (330310929888).

Almost surely, 2^{1321231034131} is an apocalyptic number.

1321231034131 is a deficient number, since it is larger than the sum of its proper divisors (12685421).

1321231034131 is a wasteful number, since it uses less digits than its factorization.

1321231034131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12685420.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 1321231034131 its reverse (1314301321231), we get a palindrome (2635532355362).

The spelling of 1321231034131 in words is "one trillion, three hundred twenty-one billion, two hundred thirty-one million, thirty-four thousand, one hundred thirty-one".