1031210021311 has 12 divisors (see below), whose sum is σ = 1054705746400. Its totient is φ = 1008075182400.

The previous prime is 1031210021287. The next prime is 1031210021333. The reversal of 1031210021311 is 1131200121301.

It is a happy number.

1031210021311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1031210021311 - 2²⁹ = 1030673150399 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 (1031210021341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166075 + ... + 1445683.

Almost surely, 2^{1031210021311} is an apocalyptic number.

1031210021311 is a deficient number, since it is larger than the sum of its proper divisors (23495725089).

1031210021311 is an equidigital number, since it uses as much as digits as its factorization.

1031210021311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279890 (or 1279789 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1031210021311 its reverse (1131200121301), we get a palindrome (2162410142612).

The spelling of 1031210021311 in words is "one trillion, thirty-one billion, two hundred ten million, twenty-one thousand, three hundred eleven".