231310121131 has 8 divisors (see below), whose sum is σ = 233482155264. Its totient is φ = 229138277160.

The previous prime is 231310121099. The next prime is 231310121137. The reversal of 231310121131 is 131121013132.

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 231310121131 - 2⁵ = 231310121099 is a prime.

It is a super-2 number, since 2×231310121131² (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 = 231310121099 and 231310121108.

It is not an unprimeable number, because it can be changed into a prime (231310121137) 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, 4019346 + ... + 4076488.

It is an arithmetic number, because the mean of its divisors is an integer number (29185269408).

Almost surely, 2^231310121131 is an apocalyptic number.

231310121131 is a deficient number, since it is larger than the sum of its proper divisors (2172034133).

231310121131 is a wasteful number, since it uses less digits than its factorization.

231310121131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95081.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 231310121131 its reverse (131121013132), we get a palindrome (362431134263).

The spelling of 231310121131 in words is "two hundred thirty-one billion, three hundred ten million, one hundred twenty-one thousand, one hundred thirty-one".