983531 has 2 divisors, whose sum is σ = 983532. Its totient is φ = 983530.

The previous prime is 983527. The next prime is 983533. The reversal of 983531 is 135389.

It is a strong prime.

It is an emirp because it is prime and its reverse (135389) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 983531 - 2² = 983527 is a prime.

It is a super-2 number, since 2×983531² = 1934666455922, which contains 22 as substring.

Together with 983533, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 983494 and 983503.

It is not a weakly prime, because it can be changed into another prime (983533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491765 + 491766.

It is an arithmetic number, because the mean of its divisors is an integer number (491766).

2⁹⁸³⁵³¹ is an apocalyptic number.

983531 is a deficient number, since it is larger than the sum of its proper divisors (1).

983531 is an equidigital number, since it uses as much as digits as its factorization.

983531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 29.

The square root of 983531 is about 991.7313144194. The cubic root of 983531 is about 99.4479918097.

The spelling of 983531 in words is "nine hundred eighty-three thousand, five hundred thirty-one".