231230332201131 has 48 divisors (see below), whose sum is σ = 349508430695424. Its totient is φ = 147033587999232.

The previous prime is 231230332201109. The next prime is 231230332201147. The reversal of 231230332201131 is 131102233032132.

231230332201131 is a `hidden beast` number, since 2 + 3 + 1 + 2 + 303 + 3 + 220 + 1 + 131 = 666.

It is not a de Polignac number, because 231230332201131 - 2⁶ = 231230332201067 is a prime.

It is a super-2 number, since 2×231230332201131² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231230332201095 and 231230332201104.

It is not an unprimeable number, because it can be changed into a prime (231230332201151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 725116635 + ... + 725435451.

It is an arithmetic number, because the mean of its divisors is an integer number (7281425639488).

Almost surely, 2^{231230332201131} is an apocalyptic number.

231230332201131 is a deficient number, since it is larger than the sum of its proper divisors (118278098494293).

231230332201131 is a wasteful number, since it uses less digits than its factorization.

231230332201131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328760 (or 328757 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 231230332201131 its reverse (131102233032132), we get a palindrome (362332565233263).

The spelling of 231230332201131 in words is "two hundred thirty-one trillion, two hundred thirty billion, three hundred thirty-two million, two hundred one thousand, one hundred thirty-one".