2131401233 has 4 divisors (see below), whose sum is σ = 2295355188. Its totient is φ = 1967447280.

The previous prime is 2131401227. The next prime is 2131401257. The reversal of 2131401233 is 3321041312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 239847169 + 1891554064 = 15487^2 + 43492^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131401233 - 2⁸ = 2131400977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131401533) 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, 81976958 + ... + 81976983.

It is an arithmetic number, because the mean of its divisors is an integer number (573838797).

Almost surely, 2^2131401233 is an apocalyptic number.

It is an amenable number.

2131401233 is a deficient number, since it is larger than the sum of its proper divisors (163953955).

2131401233 is a wasteful number, since it uses less digits than its factorization.

2131401233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163953954.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2131401233 is about 46167.1011977144. The cubic root of 2131401233 is about 1286.9304324327.

Adding to 2131401233 its reverse (3321041312), we get a palindrome (5452442545).

The spelling of 2131401233 in words is "two billion, one hundred thirty-one million, four hundred one thousand, two hundred thirty-three".