231356653131 has 8 divisors (see below), whose sum is σ = 308486667664. Its totient is φ = 154232203680.

The previous prime is 231356653117. The next prime is 231356653217. The reversal of 231356653131 is 131356653132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231356653131 - 2¹⁴ = 231356636747 is a prime.

It is a super-2 number, since 2×231356653131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231356653131.

It is not an unprimeable number, because it can be changed into a prime (231356653831) 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, 1293280 + ... + 1461261.

It is an arithmetic number, because the mean of its divisors is an integer number (38560833458).

Almost surely, 2^231356653131 is an apocalyptic number.

231356653131 is a deficient number, since it is larger than the sum of its proper divisors (77130014533).

231356653131 is a wasteful number, since it uses less digits than its factorization.

231356653131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782541.

The product of its digits is 145800, while the sum is 39.

Subtracting from 231356653131 its reverse (131356653132), we obtain a palindrome (99999999999).

The spelling of 231356653131 in words is "two hundred thirty-one billion, three hundred fifty-six million, six hundred fifty-three thousand, one hundred thirty-one".