10131222231 has 32 divisors (see below), whose sum is σ = 16323867840. Its totient is φ = 6172848000.

The previous prime is 10131222223. The next prime is 10131222289. The reversal of 10131222231 is 13222213101.

10131222231 is a `hidden beast` number, since 101 + 312 + 22 + 231 = 666.

It is not a de Polignac number, because 10131222231 - 2³ = 10131222223 is a prime.

It is a super-2 number, since 2×10131222231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131222331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107440 + ... + 178341.

It is an arithmetic number, because the mean of its divisors is an integer number (510120870).

Almost surely, 2^10131222231 is an apocalyptic number.

10131222231 is a deficient number, since it is larger than the sum of its proper divisors (6192645609).

10131222231 is a wasteful number, since it uses less digits than its factorization.

10131222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285904 (or 285898 counting only the distinct ones).

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

Adding to 10131222231 its reverse (13222213101), we get a palindrome (23353435332).

The spelling of 10131222231 in words is "ten billion, one hundred thirty-one million, two hundred twenty-two thousand, two hundred thirty-one".