1011312220331 has 8 divisors (see below), whose sum is σ = 1158260313600. Its totient is φ = 864982856808.

The previous prime is 1011312220309. The next prime is 1011312220339. The reversal of 1011312220331 is 1330222131101.

It is a happy number.

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

It is not a de Polignac number, because 1011312220331 - 2¹⁴ = 1011312203947 is a prime.

It is a super-2 number, since 2×1011312220331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011312220339) 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, 154678931 + ... + 154685468.

It is an arithmetic number, because the mean of its divisors is an integer number (144782539200).

Almost surely, 2^{1011312220331} is an apocalyptic number.

1011312220331 is a deficient number, since it is larger than the sum of its proper divisors (146948093269).

1011312220331 is an equidigital number, since it uses as much as digits as its factorization.

1011312220331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309364873.

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

Adding to 1011312220331 its reverse (1330222131101), we get a palindrome (2341534351432).

The spelling of 1011312220331 in words is "one trillion, eleven billion, three hundred twelve million, two hundred twenty thousand, three hundred thirty-one".