1200321031031 has 4 divisors (see below), whose sum is σ = 1205301616464. Its totient is φ = 1195340445600.

The previous prime is 1200321031009. The next prime is 1200321031057. The reversal of 1200321031031 is 1301301230021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200321031031 is a prime.

It is a super-2 number, since 2×1200321031031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200321091031) 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, 2490292355 + ... + 2490292836.

It is an arithmetic number, because the mean of its divisors is an integer number (301325404116).

Almost surely, 2^{1200321031031} is an apocalyptic number.

1200321031031 is a deficient number, since it is larger than the sum of its proper divisors (4980585433).

1200321031031 is an equidigital number, since it uses as much as digits as its factorization.

1200321031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4980585432.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1200321031031 its reverse (1301301230021), we get a palindrome (2501622261052).

The spelling of 1200321031031 in words is "one trillion, two hundred billion, three hundred twenty-one million, thirty-one thousand, thirty-one".