131001233231 has 8 divisors (see below), whose sum is σ = 150432038400. Its totient is φ = 112824028440.

The previous prime is 131001233203. The next prime is 131001233309. The reversal of 131001233231 is 132332100131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131001233231 - 2²⁶ = 130934124367 is a prime.

It is a super-2 number, since 2×131001233231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131001233131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313399871 + ... + 313400288.

It is an arithmetic number, because the mean of its divisors is an integer number (18804004800).

Almost surely, 2^131001233231 is an apocalyptic number.

131001233231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131001233231 is a deficient number, since it is larger than the sum of its proper divisors (19430805169).

131001233231 is a wasteful number, since it uses less digits than its factorization.

131001233231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626800189.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 131001233231 its reverse (132332100131), we get a palindrome (263333333362).

The spelling of 131001233231 in words is "one hundred thirty-one billion, one million, two hundred thirty-three thousand, two hundred thirty-one".