231000020321131 has 16 divisors (see below), whose sum is σ = 247570505582400. Its totient is φ = 214974046476288.

The previous prime is 231000020321111. The next prime is 231000020321153. The reversal of 231000020321131 is 131123020000132.

231000020321131 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 231000020321131 - 2¹¹ = 231000020319083 is a prime.

It is a super-2 number, since 2×231000020321131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231000020321099 and 231000020321108.

It is not an unprimeable number, because it can be changed into a prime (231000020321111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10387135 + ... + 23872423.

It is an arithmetic number, because the mean of its divisors is an integer number (15473156598900).

Almost surely, 2^{231000020321131} is an apocalyptic number.

231000020321131 is a deficient number, since it is larger than the sum of its proper divisors (16570485261269).

231000020321131 is a wasteful number, since it uses less digits than its factorization.

231000020321131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13505478.

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

Adding to 231000020321131 its reverse (131123020000132), we get a palindrome (362123040321263).

The spelling of 231000020321131 in words is "two hundred thirty-one trillion, twenty million, three hundred twenty-one thousand, one hundred thirty-one".