131021012231 has 8 divisors (see below), whose sum is σ = 142672609200. Its totient is φ = 119844990720.

The previous prime is 131021012219. The next prime is 131021012249. The reversal of 131021012231 is 132210120131.

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

It is a cyclic number.

It is not a de Polignac number, because 131021012231 - 2²² = 131016817927 is a prime.

It is a super-2 number, since 2×131021012231² (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 (131021012201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118893290 + ... + 118894391.

It is an arithmetic number, because the mean of its divisors is an integer number (17834076150).

Almost surely, 2^131021012231 is an apocalyptic number.

131021012231 is a deficient number, since it is larger than the sum of its proper divisors (11651596969).

131021012231 is a wasteful number, since it uses less digits than its factorization.

131021012231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237787729.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 131021012231 its reverse (132210120131), we get a palindrome (263231132362).

The spelling of 131021012231 in words is "one hundred thirty-one billion, twenty-one million, twelve thousand, two hundred thirty-one".