131303749 has 4 divisors (see below), whose sum is σ = 131354560. Its totient is φ = 131252940.

The previous prime is 131303741. The next prime is 131303797. The reversal of 131303749 is 947303131.

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: 947303131 = 9887 ⋅95813.

It is a cyclic number.

It is not a de Polignac number, because 131303749 - 2³ = 131303741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131303749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131303741) 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, 21309 + ... + 26770.

It is an arithmetic number, because the mean of its divisors is an integer number (32838640).

Almost surely, 2^131303749 is an apocalyptic number.

It is an amenable number.

131303749 is a deficient number, since it is larger than the sum of its proper divisors (50811).

131303749 is an equidigital number, since it uses as much as digits as its factorization.

131303749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50810.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 131303749 is about 11458.7847959546. The cubic root of 131303749 is about 508.2675407340.

The spelling of 131303749 in words is "one hundred thirty-one million, three hundred three thousand, seven hundred forty-nine".