1031213031211 has 16 divisors (see below), whose sum is σ = 1154805212160. Its totient is φ = 912920224320.

The previous prime is 1031213031143. The next prime is 1031213031217. The reversal of 1031213031211 is 1121303121301.

It is a cyclic number.

It is not a de Polignac number, because 1031213031211 - 2²¹ = 1031210934059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031213031217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8064415 + ... + 8191288.

It is an arithmetic number, because the mean of its divisors is an integer number (72175325760).

Almost surely, 2^{1031213031211} is an apocalyptic number.

1031213031211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1031213031211 is a deficient number, since it is larger than the sum of its proper divisors (123592180949).

1031213031211 is a wasteful number, since it uses less digits than its factorization.

1031213031211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16255866.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1031213031211 its reverse (1121303121301), we get a palindrome (2152516152512).

The spelling of 1031213031211 in words is "one trillion, thirty-one billion, two hundred thirteen million, thirty-one thousand, two hundred eleven".