2133256406231 has 4 divisors (see below), whose sum is σ = 2133861245712. Its totient is φ = 2132651566752.

The previous prime is 2133256406227. The next prime is 2133256406243. The reversal of 2133256406231 is 1326046523312.

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

It is a cyclic number.

It is not a de Polignac number, because 2133256406231 - 2² = 2133256406227 is a prime.

It is a super-2 number, since 2×2133256406231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133256406291) 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, 302414450 + ... + 302421503.

It is an arithmetic number, because the mean of its divisors is an integer number (533465311428).

Almost surely, 2^{2133256406231} is an apocalyptic number.

2133256406231 is a deficient number, since it is larger than the sum of its proper divisors (604839481).

2133256406231 is an equidigital number, since it uses as much as digits as its factorization.

2133256406231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604839480.

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 2133256406231 in words is "two trillion, one hundred thirty-three billion, two hundred fifty-six million, four hundred six thousand, two hundred thirty-one".