231232313131 has 8 divisors (see below), whose sum is σ = 240811254000. Its totient is φ = 221760399840.

The previous prime is 231232313129. The next prime is 231232313183. The reversal of 231232313131 is 131313232132.

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 231232313131 - 2¹ = 231232313129 is a prime.

It is a super-2 number, since 2×231232313131² (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 = 231232313096 and 231232313105.

It is not an unprimeable number, because it can be changed into a prime (231232313731) 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, 26752485 + ... + 26761126.

It is an arithmetic number, because the mean of its divisors is an integer number (30101406750).

Almost surely, 2^231232313131 is an apocalyptic number.

231232313131 is a deficient number, since it is larger than the sum of its proper divisors (9578940869).

231232313131 is a wasteful number, since it uses less digits than its factorization.

231232313131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53513789.

The product of its digits is 1944, while the sum is 25.

Adding to 231232313131 its reverse (131313232132), we get a palindrome (362545545263).

The spelling of 231232313131 in words is "two hundred thirty-one billion, two hundred thirty-two million, three hundred thirteen thousand, one hundred thirty-one".