980831 has 2 divisors, whose sum is σ = 980832. Its totient is φ = 980830.

The previous prime is 980827. The next prime is 980851. The reversal of 980831 is 138089.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 980831 - 2² = 980827 is a prime.

It is a super-2 number, since 2×980831² = 1924058901122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 980794 and 980803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (980801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490415 + 490416.

It is an arithmetic number, because the mean of its divisors is an integer number (490416).

2⁹⁸⁰⁸³¹ is an apocalyptic number.

980831 is a deficient number, since it is larger than the sum of its proper divisors (1).

980831 is an equidigital number, since it uses as much as digits as its factorization.

980831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 980831 is about 990.3691231051. The cubic root of 980831 is about 99.3569065064.

The spelling of 980831 in words is "nine hundred eighty thousand, eight hundred thirty-one".