2133123631 has 2 divisors, whose sum is σ = 2133123632. Its totient is φ = 2133123630.

The previous prime is 2133123599. The next prime is 2133123677. The reversal of 2133123631 is 1363213312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2133123631 - 2⁵ = 2133123599 is a prime.

It is a super-2 number, since 2×2133123631² = 9100432850261248322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2133123596 and 2133123605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2133123731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066561815 + 1066561816.

It is an arithmetic number, because the mean of its divisors is an integer number (1066561816).

Almost surely, 2^2133123631 is an apocalyptic number.

2133123631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133123631 is an equidigital number, since it uses as much as digits as its factorization.

2133123631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 25.

The square root of 2133123631 is about 46185.7513850322. The cubic root of 2133123631 is about 1287.2769978052.

Adding to 2133123631 its reverse (1363213312), we get a palindrome (3496336943).

The spelling of 2133123631 in words is "two billion, one hundred thirty-three million, one hundred twenty-three thousand, six hundred thirty-one".