231535012012433 has 8 divisors (see below), whose sum is σ = 236281937433000. Its totient is φ = 226830659914368.

The previous prime is 231535012012387. The next prime is 231535012012481. The reversal of 231535012012433 is 334210210535132.

It can be written as a sum of positive squares in 4 ways, for example, as 26053337437009 + 205481674575424 = 5104247^2 + 14334632^2 .

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 231535012012433 - 2⁴⁶ = 161166267834769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231535012012393 and 231535012012402.

It is not an unprimeable number, because it can be changed into a prime (231535012012033) 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, 10643319638 + ... + 10643341391.

It is an arithmetic number, because the mean of its divisors is an integer number (29535242179125).

Almost surely, 2^{231535012012433} is an apocalyptic number.

It is an amenable number.

231535012012433 is a deficient number, since it is larger than the sum of its proper divisors (4746925420567).

231535012012433 is a wasteful number, since it uses less digits than its factorization.

231535012012433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21286661251.

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 231535012012433 its reverse (334210210535132), we get a palindrome (565745222547565).

The spelling of 231535012012433 in words is "two hundred thirty-one trillion, five hundred thirty-five billion, twelve million, twelve thousand, four hundred thirty-three".