1321230001131 has 24 divisors (see below), whose sum is σ = 1921272444000. Its totient is φ = 874906574976.

The previous prime is 1321230001123. The next prime is 1321230001207. The reversal of 1321230001131 is 1311000321231.

1321230001131 is a `hidden beast` number, since 1 + 321 + 2 + 300 + 0 + 11 + 31 = 666.

It is not a de Polignac number, because 1321230001131 - 2³ = 1321230001123 is a prime.

It is a super-2 number, since 2×1321230001131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1321230005131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1743495 + ... + 2383743.

It is an arithmetic number, because the mean of its divisors is an integer number (80053018500).

Almost surely, 2^{1321230001131} is an apocalyptic number.

1321230001131 is a deficient number, since it is larger than the sum of its proper divisors (600042442869).

1321230001131 is a wasteful number, since it uses less digits than its factorization.

1321230001131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641795 (or 641792 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1321230001131 its reverse (1311000321231), we get a palindrome (2632230322362).

The spelling of 1321230001131 in words is "one trillion, three hundred twenty-one billion, two hundred thirty million, one thousand, one hundred thirty-one".