451532131 has 4 divisors (see below), whose sum is σ = 475297000. Its totient is φ = 427767264.

The previous prime is 451532063. The next prime is 451532161. The reversal of 451532131 is 131235154.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131235154 = 2 ⋅65617577.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451532131 is a prime.

It is a super-2 number, since 2×451532131² = 407762530650802322, 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 = 451532096 and 451532105.

It is not an unprimeable number, because it can be changed into a prime (451532161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11882406 + ... + 11882443.

It is an arithmetic number, because the mean of its divisors is an integer number (118824250).

Almost surely, 2^451532131 is an apocalyptic number.

451532131 is a deficient number, since it is larger than the sum of its proper divisors (23764869).

451532131 is a wasteful number, since it uses less digits than its factorization.

451532131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23764868.

The product of its digits is 1800, while the sum is 25.

The square root of 451532131 is about 21249.2854232795. The cubic root of 451532131 is about 767.1781408877.

Adding to 451532131 its reverse (131235154), we get a palindrome (582767285).

The spelling of 451532131 in words is "four hundred fifty-one million, five hundred thirty-two thousand, one hundred thirty-one".