131406445 has 8 divisors (see below), whose sum is σ = 159909120. Its totient is φ = 103644240.

The previous prime is 131406439. The next prime is 131406449. The reversal of 131406445 is 544604131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131406445 - 2⁹ = 131405933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131406449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184725 + ... + 185434.

It is an arithmetic number, because the mean of its divisors is an integer number (19988640).

Almost surely, 2^131406445 is an apocalyptic number.

It is an amenable number.

131406445 is a deficient number, since it is larger than the sum of its proper divisors (28502675).

131406445 is an equidigital number, since it uses as much as digits as its factorization.

131406445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370235.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 131406445 is about 11463.2650235437. The cubic root of 131406445 is about 508.4000158574.

The spelling of 131406445 in words is "one hundred thirty-one million, four hundred six thousand, four hundred forty-five".