231225513131 has 8 divisors (see below), whose sum is σ = 244008371280. Its totient is φ = 218503964448.

The previous prime is 231225513121. The next prime is 231225513161. The reversal of 231225513131 is 131315522132.

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 231225513131 - 2¹⁰ = 231225512107 is a prime.

It is a super-2 number, since 2×231225513131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231225513094 and 231225513103.

It is not an unprimeable number, because it can be changed into a prime (231225513121) 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, 15319616 + ... + 15334701.

It is an arithmetic number, because the mean of its divisors is an integer number (30501046410).

Almost surely, 2^231225513131 is an apocalyptic number.

231225513131 is a deficient number, since it is larger than the sum of its proper divisors (12782858149).

231225513131 is a wasteful number, since it uses less digits than its factorization.

231225513131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30654733.

The product of its digits is 5400, while the sum is 29.

Subtracting from 231225513131 its reverse (131315522132), we obtain a palindrome (99909990999).

The spelling of 231225513131 in words is "two hundred thirty-one billion, two hundred twenty-five million, five hundred thirteen thousand, one hundred thirty-one".