2133123031 has 16 divisors (see below), whose sum is σ = 2357197920. Its totient is φ = 1917780480.

The previous prime is 2133123029. The next prime is 2133123049. The reversal of 2133123031 is 1303213312.

It is a cyclic number.

It is not a de Polignac number, because 2133123031 - 2¹ = 2133123029 is a prime.

It is a super-2 number, since 2×2133123031² = 9100427730765253922, which 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 (2133123631) 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, 348211 + ... + 354283.

It is an arithmetic number, because the mean of its divisors is an integer number (147324870).

Almost surely, 2^2133123031 is an apocalyptic number.

2133123031 is a deficient number, since it is larger than the sum of its proper divisors (224074889).

2133123031 is a wasteful number, since it uses less digits than its factorization.

2133123031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6786.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 2133123031 is about 46185.7448895219. The cubic root of 2133123031 is about 1287.2768771111.

Adding to 2133123031 its reverse (1303213312), we get a palindrome (3436336343).

The spelling of 2133123031 in words is "two billion, one hundred thirty-three million, one hundred twenty-three thousand, thirty-one".