132447731 has 32 divisors (see below), whose sum is σ = 160247808. Its totient is φ = 108218880.

The previous prime is 132447713. The next prime is 132447737. The reversal of 132447731 is 137744231.

It is a cyclic number.

It is not a de Polignac number, because 132447731 - 2¹⁰ = 132446707 is a prime.

It is a super-2 number, since 2×132447731² = 35084802894096722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (132447737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 360710 + ... + 361076.

It is an arithmetic number, because the mean of its divisors is an integer number (5007744).

Almost surely, 2^132447731 is an apocalyptic number.

132447731 is a deficient number, since it is larger than the sum of its proper divisors (27800077).

132447731 is a wasteful number, since it uses less digits than its factorization.

132447731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491.

The product of its digits is 14112, while the sum is 32.

The square root of 132447731 is about 11508.5937889909. The cubic root of 132447731 is about 509.7393657369.

The spelling of 132447731 in words is "one hundred thirty-two million, four hundred forty-seven thousand, seven hundred thirty-one".