10031311203121 has 4 divisors (see below), whose sum is σ = 10802950526452. Its totient is φ = 9259671879792.

The previous prime is 10031311203049. The next prime is 10031311203131. The reversal of 10031311203121 is 12130211313001.

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 549838563121 + 9481472640000 = 741511^2 + 3079200^2 .

It is a cyclic number.

It is not a de Polignac number, because 10031311203121 - 2⁷ = 10031311202993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10031311203131) 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, 385819661646 + ... + 385819661671.

It is an arithmetic number, because the mean of its divisors is an integer number (2700737631613).

Almost surely, 2^{10031311203121} is an apocalyptic number.

It is an amenable number.

10031311203121 is a deficient number, since it is larger than the sum of its proper divisors (771639323331).

10031311203121 is an equidigital number, since it uses as much as digits as its factorization.

10031311203121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771639323330.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 10031311203121 its reverse (12130211313001), we get a palindrome (22161522516122).

The spelling of 10031311203121 in words is "ten trillion, thirty-one billion, three hundred eleven million, two hundred three thousand, one hundred twenty-one".