231241000142131 has 16 divisors (see below), whose sum is σ = 278198463208960. Its totient is φ = 187765330798080.

The previous prime is 231241000142111. The next prime is 231241000142167. The reversal of 231241000142131 is 131241000142132.

It is a de Polignac number, because none of the positive numbers 2^k-231241000142131 is a prime.

It is a super-2 number, since 2×231241000142131² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231241000142096 and 231241000142105.

It is not an unprimeable number, because it can be changed into a prime (231241000142111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40437831 + ... + 45800656.

It is an arithmetic number, because the mean of its divisors is an integer number (17387403950560).

Almost surely, 2^{231241000142131} is an apocalyptic number.

231241000142131 is a deficient number, since it is larger than the sum of its proper divisors (46957463066829).

231241000142131 is a wasteful number, since it uses less digits than its factorization.

231241000142131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86258674.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 231241000142131 its reverse (131241000142132), we get a palindrome (362482000284263).

Subtracting from 231241000142131 its reverse (131241000142132), we obtain a palindrome (99999999999999).

The spelling of 231241000142131 in words is "two hundred thirty-one trillion, two hundred forty-one billion, one hundred forty-two thousand, one hundred thirty-one".