3131230200121 has 4 divisors (see below), whose sum is σ = 3131242384500. Its totient is φ = 3131218015744.

The previous prime is 3131230200071. The next prime is 3131230200127. The reversal of 3131230200121 is 1210020321313.

3131230200121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1033190931600 + 2098039268521 = 1016460^2 + 1448461^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131230200121 - 2¹⁷ = 3131230069049 is a prime.

It is a super-2 number, since 2×3131230200121² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131230200127) 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, 5698216 + ... + 6223513.

It is an arithmetic number, because the mean of its divisors is an integer number (782810596125).

Almost surely, 2^{3131230200121} is an apocalyptic number.

It is an amenable number.

3131230200121 is a deficient number, since it is larger than the sum of its proper divisors (12184379).

3131230200121 is a wasteful number, since it uses less digits than its factorization.

3131230200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12184378.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 3131230200121 its reverse (1210020321313), we get a palindrome (4341250521434).

The spelling of 3131230200121 in words is "three trillion, one hundred thirty-one billion, two hundred thirty million, two hundred thousand, one hundred twenty-one".