83351531 has 2 divisors, whose sum is σ = 83351532. Its totient is φ = 83351530.

The previous prime is 83351509. The next prime is 83351579. The reversal of 83351531 is 13515338.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83351531 is a prime.

It is a super-2 number, since 2×83351531² = 13894955440087922, 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 = 83351494 and 83351503.

It is not a weakly prime, because it can be changed into another prime (83351581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41675765 + 41675766.

It is an arithmetic number, because the mean of its divisors is an integer number (41675766).

Almost surely, 2^83351531 is an apocalyptic number.

83351531 is a deficient number, since it is larger than the sum of its proper divisors (1).

83351531 is an equidigital number, since it uses as much as digits as its factorization.

83351531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 29.

The square root of 83351531 is about 9129.7059645971. The cubic root of 83351531 is about 436.8220243063.

Adding to 83351531 its reverse (13515338), we get a palindrome (96866869).

The spelling of 83351531 in words is "eighty-three million, three hundred fifty-one thousand, five hundred thirty-one".