1031211320013 has 12 divisors (see below), whose sum is σ = 1702317099808. Its totient is φ = 589263611400.

The previous prime is 1031211319997. The next prime is 1031211320047. The reversal of 1031211320013 is 3100231121301.

1031211320013 is a `hidden beast` number, since 10 + 312 + 11 + 320 + 0 + 13 = 666.

It is not a de Polignac number, because 1031211320013 - 2⁴ = 1031211319997 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 (1031211325013) 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, 8184216763 + ... + 8184216888.

Almost surely, 2^{1031211320013} is an apocalyptic number.

It is an amenable number.

1031211320013 is a deficient number, since it is larger than the sum of its proper divisors (671105779795).

1031211320013 is a wasteful number, since it uses less digits than its factorization.

1031211320013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16368433664 (or 16368433661 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1031211320013 its reverse (3100231121301), we get a palindrome (4131442441314).

The spelling of 1031211320013 in words is "one trillion, thirty-one billion, two hundred eleven million, three hundred twenty thousand, thirteen".