1031220213311 has 8 divisors (see below), whose sum is σ = 1085581520880. Its totient is φ = 976867561728.

The previous prime is 1031220213229. The next prime is 1031220213337. The reversal of 1031220213311 is 1133120221301.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1031220213311 - 2¹⁰ = 1031220212287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031220213391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1918736 + ... + 2396661.

It is an arithmetic number, because the mean of its divisors is an integer number (135697690110).

Almost surely, 2^{1031220213311} is an apocalyptic number.

1031220213311 is a deficient number, since it is larger than the sum of its proper divisors (54361307569).

1031220213311 is a wasteful number, since it uses less digits than its factorization.

1031220213311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4327993.

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

Adding to 1031220213311 its reverse (1133120221301), we get a palindrome (2164340434612).

The spelling of 1031220213311 in words is "one trillion, thirty-one billion, two hundred twenty million, two hundred thirteen thousand, three hundred eleven".