2153442131 has 4 divisors (see below), whose sum is σ = 2177638200. Its totient is φ = 2129246064.

The previous prime is 2153442127. The next prime is 2153442163. The reversal of 2153442131 is 1312443512.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2153442131 - 2² = 2153442127 is a prime.

It is a super-2 number, since 2×2153442131² = 9274626023131642322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2153442131.

It is not an unprimeable number, because it can be changed into a prime (2153441131) 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, 12097901 + ... + 12098078.

It is an arithmetic number, because the mean of its divisors is an integer number (544409550).

Almost surely, 2^2153442131 is an apocalyptic number.

2153442131 is a deficient number, since it is larger than the sum of its proper divisors (24196069).

2153442131 is an equidigital number, since it uses as much as digits as its factorization.

2153442131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24196068.

The product of its digits is 2880, while the sum is 26.

The square root of 2153442131 is about 46405.1950863263. The cubic root of 2153442131 is about 1291.3512933791.

Adding to 2153442131 its reverse (1312443512), we get a palindrome (3465885643).

The spelling of 2153442131 in words is "two billion, one hundred fifty-three million, four hundred forty-two thousand, one hundred thirty-one".