1031203321211 has 32 divisors (see below), whose sum is σ = 1213248960000. Its totient is φ = 876071591136.

The previous prime is 1031203321193. The next prime is 1031203321223. The reversal of 1031203321211 is 1121233021301.

It is a happy number.

1031203321211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1031203321211 - 2³⁴ = 1014023452027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1031203323211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18821525 + ... + 18876233.

It is an arithmetic number, because the mean of its divisors is an integer number (37914030000).

Almost surely, 2^{1031203321211} is an apocalyptic number.

1031203321211 is a deficient number, since it is larger than the sum of its proper divisors (182045638789).

1031203321211 is an equidigital number, since it uses as much as digits as its factorization.

1031203321211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55216 (or 55202 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1031203321211 its reverse (1121233021301), we get a palindrome (2152436342512).

The spelling of 1031203321211 in words is "one trillion, thirty-one billion, two hundred three million, three hundred twenty-one thousand, two hundred eleven".