981431 has 6 divisors (see below), whose sum is σ = 1078896. Its totient is φ = 892100.

The previous prime is 981419. The next prime is 981437. The reversal of 981431 is 134189.

It is not a de Polignac number, because 981431 - 2¹⁴ = 965047 is a prime.

It is a super-2 number, since 2×981431² = 1926413615522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 981431.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 981431.

It is not an unprimeable number, because it can be changed into a prime (981437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3935 + ... + 4176.

It is an arithmetic number, because the mean of its divisors is an integer number (179816).

2⁹⁸¹⁴³¹ is an apocalyptic number.

981431 is a deficient number, since it is larger than the sum of its proper divisors (97465).

981431 is a wasteful number, since it uses less digits than its factorization.

981431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8133 (or 8122 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

The square root of 981431 is about 990.6719941535. The cubic root of 981431 is about 99.3771621169.

The spelling of 981431 in words is "nine hundred eighty-one thousand, four hundred thirty-one".