233112145405 has 4 divisors (see below), whose sum is σ = 279734574492. Its totient is φ = 186489716320.

The previous prime is 233112145393. The next prime is 233112145423. The reversal of 233112145405 is 504541211332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 144958378756 + 88153766649 = 380734^2 + 296907^2 .

It is not a de Polignac number, because 233112145405 - 2⁵ = 233112145373 is a prime.

It is a super-2 number, since 2×233112145405² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23311214536 + ... + 23311214545.

It is an arithmetic number, because the mean of its divisors is an integer number (69933643623).

Almost surely, 2^233112145405 is an apocalyptic number.

It is an amenable number.

233112145405 is a deficient number, since it is larger than the sum of its proper divisors (46622429087).

233112145405 is an equidigital number, since it uses as much as digits as its factorization.

233112145405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46622429086.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 233112145405 its reverse (504541211332), we get a palindrome (737653356737).

The spelling of 233112145405 in words is "two hundred thirty-three billion, one hundred twelve million, one hundred forty-five thousand, four hundred five".