2131233405 has 32 divisors (see below), whose sum is σ = 3901132800. Its totient is φ = 973273152.

The previous prime is 2131233389. The next prime is 2131233431. The reversal of 2131233405 is 5043321312.

It is not a de Polignac number, because 2131233405 - 2⁴ = 2131233389 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97036 + ... + 116954.

It is an arithmetic number, because the mean of its divisors is an integer number (121910400).

Almost surely, 2^2131233405 is an apocalyptic number.

It is an amenable number.

2131233405 is a deficient number, since it is larger than the sum of its proper divisors (1769899395).

2131233405 is a wasteful number, since it uses less digits than its factorization.

2131233405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20953.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 2131233405 is about 46165.2835472718. The cubic root of 2131233405 is about 1286.8966536168.

Adding to 2131233405 its reverse (5043321312), we get a palindrome (7174554717).

The spelling of 2131233405 in words is "two billion, one hundred thirty-one million, two hundred thirty-three thousand, four hundred five".