132947431 has 2 divisors, whose sum is σ = 132947432. Its totient is φ = 132947430.

The previous prime is 132947387. The next prime is 132947449. The reversal of 132947431 is 134749231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 132947431 - 2¹³ = 132939239 is a prime.

It is a super-2 number, since 2×132947431² = 35350038818999522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132947131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66473715 + 66473716.

It is an arithmetic number, because the mean of its divisors is an integer number (66473716).

Almost surely, 2^132947431 is an apocalyptic number.

132947431 is a deficient number, since it is larger than the sum of its proper divisors (1).

132947431 is an equidigital number, since it uses as much as digits as its factorization.

132947431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 132947431 is about 11530.2832142146. The cubic root of 132947431 is about 510.3796110027.

The spelling of 132947431 in words is "one hundred thirty-two million, nine hundred forty-seven thousand, four hundred thirty-one".