461531131 has 4 divisors (see below), whose sum is σ = 476419264. Its totient is φ = 446643000.

The previous prime is 461531123. The next prime is 461531149. The reversal of 461531131 is 131135164.

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 461531131 - 2³ = 461531123 is a prime.

It is a super-2 number, since 2×461531131² = 426021969764278322, 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 = 461531096 and 461531105.

It is not an unprimeable number, because it can be changed into a prime (461531111) 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, 7444020 + ... + 7444081.

It is an arithmetic number, because the mean of its divisors is an integer number (119104816).

Almost surely, 2^461531131 is an apocalyptic number.

461531131 is a deficient number, since it is larger than the sum of its proper divisors (14888133).

461531131 is a wasteful number, since it uses less digits than its factorization.

461531131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14888132.

The product of its digits is 1080, while the sum is 25.

The square root of 461531131 is about 21483.2756115077. The cubic root of 461531131 is about 772.7997983143.

Adding to 461531131 its reverse (131135164), we get a palindrome (592666295).

The spelling of 461531131 in words is "four hundred sixty-one million, five hundred thirty-one thousand, one hundred thirty-one".