2005452131 has 4 divisors (see below), whose sum is σ = 2032924152. Its totient is φ = 1977980112.

The previous prime is 2005452079. The next prime is 2005452139. The reversal of 2005452131 is 1312545002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2005452131 is a prime.

It is a super-2 number, since 2×2005452131² = 8043676499464882322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2005452097 and 2005452106.

It is not an unprimeable number, because it can be changed into a prime (2005452139) 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, 13735901 + ... + 13736046.

It is an arithmetic number, because the mean of its divisors is an integer number (508231038).

Almost surely, 2^2005452131 is an apocalyptic number.

2005452131 is a deficient number, since it is larger than the sum of its proper divisors (27472021).

2005452131 is an equidigital number, since it uses as much as digits as its factorization.

2005452131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27472020.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2005452131 is about 44782.2747412411. The cubic root of 2005452131 is about 1261.0648869011.

Adding to 2005452131 its reverse (1312545002), we get a palindrome (3317997133).

The spelling of 2005452131 in words is "two billion, five million, four hundred fifty-two thousand, one hundred thirty-one".