2231542133 has 16 divisors (see below), whose sum is σ = 2387844480. Its totient is φ = 2080843776.

The previous prime is 2231542129. The next prime is 2231542189. The reversal of 2231542133 is 3312451322.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2231542133 - 2² = 2231542129 is a prime.

It is a super-3 number, since 3×2231542133³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231542333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142013 + ... + 156941.

It is an arithmetic number, because the mean of its divisors is an integer number (149240280).

Almost surely, 2^2231542133 is an apocalyptic number.

2231542133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2231542133 is a deficient number, since it is larger than the sum of its proper divisors (156302347).

2231542133 is a wasteful number, since it uses less digits than its factorization.

2231542133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15116.

The product of its digits is 4320, while the sum is 26.

The square root of 2231542133 is about 47239.2012316042. The cubic root of 2231542133 is about 1306.7776468093. Note that the first 3 decimals are identical.

Adding to 2231542133 its reverse (3312451322), we get a palindrome (5543993455).

The spelling of 2231542133 in words is "two billion, two hundred thirty-one million, five hundred forty-two thousand, one hundred thirty-three".