131012022231 has 24 divisors (see below), whose sum is σ = 207280691280. Its totient is φ = 79369011456.

The previous prime is 131012022227. The next prime is 131012022269. The reversal of 131012022231 is 132220210131.

131012022231 is a `hidden beast` number, since 1 + 310 + 120 + 2 + 2 + 231 = 666.

It is not a de Polignac number, because 131012022231 - 2² = 131012022227 is a prime.

It is a super-2 number, since 2×131012022231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131012022731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14759145 + ... + 14768018.

It is an arithmetic number, because the mean of its divisors is an integer number (8636695470).

Almost surely, 2^131012022231 is an apocalyptic number.

131012022231 is a deficient number, since it is larger than the sum of its proper divisors (76268669049).

131012022231 is a wasteful number, since it uses less digits than its factorization.

131012022231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29527215 (or 29527212 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 131012022231 its reverse (132220210131), we get a palindrome (263232232362).

The spelling of 131012022231 in words is "one hundred thirty-one billion, twelve million, twenty-two thousand, two hundred thirty-one".