231302133233 has 4 divisors (see below), whose sum is σ = 231459376128. Its totient is φ = 231144890340.

The previous prime is 231302133191. The next prime is 231302133281. The reversal of 231302133233 is 332331203132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231302133233 - 2¹⁴ = 231302116849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231302133533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78619241 + ... + 78622182.

It is an arithmetic number, because the mean of its divisors is an integer number (57864844032).

Almost surely, 2^231302133233 is an apocalyptic number.

It is an amenable number.

231302133233 is a deficient number, since it is larger than the sum of its proper divisors (157242895).

231302133233 is a wasteful number, since it uses less digits than its factorization.

231302133233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157242894.

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 231302133233 its reverse (332331203132), we get a palindrome (563633336365).

The spelling of 231302133233 in words is "two hundred thirty-one billion, three hundred two million, one hundred thirty-three thousand, two hundred thirty-three".