83078531 has 2 divisors, whose sum is σ = 83078532. Its totient is φ = 83078530.

The previous prime is 83078521. The next prime is 83078603. The reversal of 83078531 is 13587038.

83078531 is nontrivially palindromic in base 14.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83078531 - 2⁶ = 83078467 is a prime.

It is a super-2 number, since 2×83078531² = 13804084626235922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 83078491 and 83078500.

It is not a weakly prime, because it can be changed into another prime (83078521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41539265 + 41539266.

It is an arithmetic number, because the mean of its divisors is an integer number (41539266).

Almost surely, 2^83078531 is an apocalyptic number.

83078531 is a deficient number, since it is larger than the sum of its proper divisors (1).

83078531 is an equidigital number, since it uses as much as digits as its factorization.

83078531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 83078531 is about 9114.7425087053. The cubic root of 83078531 is about 436.3445971820.

The spelling of 83078531 in words is "eighty-three million, seventy-eight thousand, five hundred thirty-one".