1031221233131 has 4 divisors (see below), whose sum is σ = 1031598834264. Its totient is φ = 1030843632000.

The previous prime is 1031221233121. The next prime is 1031221233151. The reversal of 1031221233131 is 1313321221301.

1031221233131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 1031221233131 - 2⁶ = 1031221233067 is a prime.

It is a super-2 number, since 2×1031221233131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1031221233097 and 1031221233106.

It is not an unprimeable number, because it can be changed into a prime (1031221233121) 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, 188796470 + ... + 188801931.

It is an arithmetic number, because the mean of its divisors is an integer number (257899708566).

Almost surely, 2^{1031221233131} is an apocalyptic number.

1031221233131 is a deficient number, since it is larger than the sum of its proper divisors (377601133).

1031221233131 is an equidigital number, since it uses as much as digits as its factorization.

1031221233131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377601132.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1031221233131 its reverse (1313321221301), we get a palindrome (2344542454432).

The spelling of 1031221233131 in words is "one trillion, thirty-one billion, two hundred twenty-one million, two hundred thirty-three thousand, one hundred thirty-one".