131044646 has 4 divisors (see below), whose sum is σ = 196566972. Its totient is φ = 65522322.

The previous prime is 131044643. The next prime is 131044663. The reversal of 131044646 is 646440131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 646440131 = 29 ⋅22291039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131044643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32761160 + ... + 32761163.

It is an arithmetic number, because the mean of its divisors is an integer number (49141743).

Almost surely, 2^131044646 is an apocalyptic number.

131044646 is a deficient number, since it is larger than the sum of its proper divisors (65522326).

131044646 is an equidigital number, since it uses as much as digits as its factorization.

131044646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65522325.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 131044646 is about 11447.4733456776. The cubic root of 131044646 is about 507.9329974458.

Adding to 131044646 its reverse (646440131), we get a palindrome (777484777).

The spelling of 131044646 in words is "one hundred thirty-one million, forty-four thousand, six hundred forty-six".