981315 has 20 divisors (see below), whose sum is σ = 1759824. Its totient is φ = 523152.

The previous prime is 981311. The next prime is 981319. The reversal of 981315 is 513189.

It is an interprime number because it is at equal distance from previous prime (981311) and next prime (981319).

It is not a de Polignac number, because 981315 - 2² = 981311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 981315.

It is not an unprimeable number, because it can be changed into a prime (981311) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 807 + ... + 1616.

2⁹⁸¹³¹⁵ is an apocalyptic number.

981315 is a deficient number, since it is larger than the sum of its proper divisors (778509).

981315 is a wasteful number, since it uses less digits than its factorization.

981315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440 (or 2431 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 981315 is about 990.6134463049. The cubic root of 981315 is about 99.3732466761.

It can be divided in two parts, 981 and 315, that added together give a 4-th power (1296 = 6⁴).

The spelling of 981315 in words is "nine hundred eighty-one thousand, three hundred fifteen".