131040644 has 24 divisors (see below), whose sum is σ = 275876160. Its totient is φ = 53204256.

The previous prime is 131040601. The next prime is 131040659. The reversal of 131040644 is 446040131.

131040644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122627 + ... + 123690.

It is an arithmetic number, because the mean of its divisors is an integer number (11494840).

Almost surely, 2^131040644 is an apocalyptic number.

131040644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131040644 is an abundant number, since it is smaller than the sum of its proper divisors (144835516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131040644 is a wasteful number, since it uses less digits than its factorization.

131040644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246347 (or 246345 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 131040644 is about 11447.2985459452. The cubic root of 131040644 is about 507.9278267689.

Adding to 131040644 its reverse (446040131), we get a palindrome (577080775).

The spelling of 131040644 in words is "one hundred thirty-one million, forty thousand, six hundred forty-four".