328142531 has 2 divisors, whose sum is σ = 328142532. Its totient is φ = 328142530.

The previous prime is 328142501. The next prime is 328142539. The reversal of 328142531 is 135241823.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (135241823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 328142531 - 2¹⁴ = 328126147 is a prime.

It is a super-2 number, since 2×328142531² = 215355041302171922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 328142494 and 328142503.

It is not a weakly prime, because it can be changed into another prime (328142539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164071265 + 164071266.

It is an arithmetic number, because the mean of its divisors is an integer number (164071266).

Almost surely, 2^328142531 is an apocalyptic number.

328142531 is a deficient number, since it is larger than the sum of its proper divisors (1).

328142531 is an equidigital number, since it uses as much as digits as its factorization.

328142531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 29.

The square root of 328142531 is about 18114.7048278464. The cubic root of 328142531 is about 689.7433274828.

The spelling of 328142531 in words is "three hundred twenty-eight million, one hundred forty-two thousand, five hundred thirty-one".