64532131 has 2 divisors, whose sum is σ = 64532132. Its totient is φ = 64532130.

The previous prime is 64532099. The next prime is 64532137. The reversal of 64532131 is 13123546.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64532131 - 2⁵ = 64532099 is a prime.

It is a super-2 number, since 2×64532131² = 8328791862802322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64532096 and 64532105.

It is not a weakly prime, because it can be changed into another prime (64532137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32266065 + 32266066.

It is an arithmetic number, because the mean of its divisors is an integer number (32266066).

Almost surely, 2^64532131 is an apocalyptic number.

64532131 is a deficient number, since it is larger than the sum of its proper divisors (1).

64532131 is an equidigital number, since it uses as much as digits as its factorization.

64532131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 64532131 is about 8033.1893417247. The cubic root of 64532131 is about 401.1055478448.

Adding to 64532131 its reverse (13123546), we get a palindrome (77655677).

The spelling of 64532131 in words is "sixty-four million, five hundred thirty-two thousand, one hundred thirty-one".