1031331211213 has 8 divisors (see below), whose sum is σ = 1035865319832. Its totient is φ = 1026802936896.

The previous prime is 1031331211201. The next prime is 1031331211217. The reversal of 1031331211213 is 3121121331301.

It can be written as a sum of positive squares in 4 ways, for example, as 36648124969 + 994683086244 = 191437^2 + 997338^2 .

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 1031331211213 - 2⁵ = 1031331211181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031331211217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1104070 + ... + 1811527.

It is an arithmetic number, because the mean of its divisors is an integer number (129483164979).

Almost surely, 2^{1031331211213} is an apocalyptic number.

It is an amenable number.

1031331211213 is a deficient number, since it is larger than the sum of its proper divisors (4534108619).

1031331211213 is a wasteful number, since it uses less digits than its factorization.

1031331211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917151.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1031331211213 its reverse (3121121331301), we get a palindrome (4152452542514).

The spelling of 1031331211213 in words is "one trillion, thirty-one billion, three hundred thirty-one million, two hundred eleven thousand, two hundred thirteen".