131929747 has 4 divisors (see below), whose sum is σ = 132310296. Its totient is φ = 131549200.

The previous prime is 131929709. The next prime is 131929783. The reversal of 131929747 is 747929131.

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: 747929131 = 263 ⋅2843837.

It is a cyclic number.

It is not a de Polignac number, because 131929747 - 2⁷ = 131929619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131923747) 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, 189754 + ... + 190447.

It is an arithmetic number, because the mean of its divisors is an integer number (33077574).

Almost surely, 2^131929747 is an apocalyptic number.

131929747 is a deficient number, since it is larger than the sum of its proper divisors (380549).

131929747 is an equidigital number, since it uses as much as digits as its factorization.

131929747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380548.

The product of its digits is 95256, while the sum is 43.

The square root of 131929747 is about 11486.0675167788. The cubic root of 131929747 is about 509.0739918399.

The spelling of 131929747 in words is "one hundred thirty-one million, nine hundred twenty-nine thousand, seven hundred forty-seven".