131204737 has 4 divisors (see below), whose sum is σ = 131270400. Its totient is φ = 131139076.

The previous prime is 131204713. The next prime is 131204761. The reversal of 131204737 is 737402131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 737402131 = 331 ⋅2227801.

It is an interprime number because it is at equal distance from previous prime (131204713) and next prime (131204761).

It is a cyclic number.

It is not a de Polignac number, because 131204737 - 2⁷ = 131204609 is a prime.

It is a super-2 number, since 2×131204737² = 34429366022478338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131204707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29737 + ... + 33862.

It is an arithmetic number, because the mean of its divisors is an integer number (32817600).

Almost surely, 2^131204737 is an apocalyptic number.

It is an amenable number.

131204737 is a deficient number, since it is larger than the sum of its proper divisors (65663).

131204737 is an equidigital number, since it uses as much as digits as its factorization.

131204737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65662.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 131204737 is about 11454.4636277741. The cubic root of 131204737 is about 508.1397524547.

Adding to 131204737 its reverse (737402131), we get a palindrome (868606868).

The spelling of 131204737 in words is "one hundred thirty-one million, two hundred four thousand, seven hundred thirty-seven".