131445044 has 6 divisors (see below), whose sum is σ = 230028834. Its totient is φ = 65722520.

The previous prime is 131445043. The next prime is 131445049. The reversal of 131445044 is 440544131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 131377444 + 67600 = 11462^2 + 260^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131445043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16430627 + ... + 16430634.

It is an arithmetic number, because the mean of its divisors is an integer number (38338139).

Almost surely, 2^131445044 is an apocalyptic number.

It is an amenable number.

131445044 is a deficient number, since it is larger than the sum of its proper divisors (98583790).

131445044 is a wasteful number, since it uses less digits than its factorization.

131445044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32861265 (or 32861263 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 131445044 is about 11464.9484953052. The cubic root of 131445044 is about 508.4497896999.

Adding to 131445044 its reverse (440544131), we get a palindrome (571989175).

The spelling of 131445044 in words is "one hundred thirty-one million, four hundred forty-five thousand, forty-four".