131244445 has 16 divisors (see below), whose sum is σ = 161296128. Its totient is φ = 102473280.

The previous prime is 131244433. The next prime is 131244469. The reversal of 131244445 is 544442131.

It is not a de Polignac number, because 131244445 - 2⁵ = 131244413 is a prime.

It is a super-3 number, since 3×131244445³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128035 + ... + 129055.

It is an arithmetic number, because the mean of its divisors is an integer number (10081008).

Almost surely, 2^131244445 is an apocalyptic number.

It is an amenable number.

131244445 is a deficient number, since it is larger than the sum of its proper divisors (30051683).

131244445 is a wasteful number, since it uses less digits than its factorization.

131244445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620.

The product of its digits is 7680, while the sum is 28.

The square root of 131244445 is about 11456.1967947482. The cubic root of 131244445 is about 508.1910086786.

Adding to 131244445 its reverse (544442131), we get a palindrome (675686576).

The spelling of 131244445 in words is "one hundred thirty-one million, two hundred forty-four thousand, four hundred forty-five".