1031010121213 has 4 divisors (see below), whose sum is σ = 1091657775420. Its totient is φ = 970362467008.

The previous prime is 1031010121177. The next prime is 1031010121261. The reversal of 1031010121213 is 3121210101301.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 939420362169 + 91589759044 = 969237^2 + 302638^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031010121213 - 2²¹ = 1031008024061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031010121283) 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, 30323827078 + ... + 30323827111.

It is an arithmetic number, because the mean of its divisors is an integer number (272914443855).

Almost surely, 2^{1031010121213} is an apocalyptic number.

It is an amenable number.

1031010121213 is a deficient number, since it is larger than the sum of its proper divisors (60647654207).

1031010121213 is an equidigital number, since it uses as much as digits as its factorization.

1031010121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60647654206.

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

Adding to 1031010121213 its reverse (3121210101301), we get a palindrome (4152220222514).

The spelling of 1031010121213 in words is "one trillion, thirty-one billion, ten million, one hundred twenty-one thousand, two hundred thirteen".