131204461 has 4 divisors (see below), whose sum is σ = 131413024. Its totient is φ = 130995900.

The previous prime is 131204459. The next prime is 131204467. The reversal of 131204461 is 164402131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131204461 - 2¹ = 131204459 is a prime.

It is a super-2 number, since 2×131204461² = 34429221172601042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131204467) 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, 103335 + ... + 104596.

It is an arithmetic number, because the mean of its divisors is an integer number (32853256).

Almost surely, 2^131204461 is an apocalyptic number.

It is an amenable number.

131204461 is a deficient number, since it is larger than the sum of its proper divisors (208563).

131204461 is an equidigital number, since it uses as much as digits as its factorization.

131204461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208562.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 131204461 is about 11454.4515800627. The cubic root of 131204461 is about 508.1393961498.

Adding to 131204461 its reverse (164402131), we get a palindrome (295606592).

The spelling of 131204461 in words is "one hundred thirty-one million, two hundred four thousand, four hundred sixty-one".