981148313 has 2 divisors, whose sum is σ = 981148314. Its totient is φ = 981148312.

The previous prime is 981148303. The next prime is 981148369. The reversal of 981148313 is 313841189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 846402649 + 134745664 = 29093^2 + 11608^2 .

It is a cyclic number.

It is not a de Polignac number, because 981148313 - 2⁶ = 981148249 is a prime.

It is not a weakly prime, because it can be changed into another prime (981148303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490574156 + 490574157.

It is an arithmetic number, because the mean of its divisors is an integer number (490574157).

Almost surely, 2^981148313 is an apocalyptic number.

It is an amenable number.

981148313 is a deficient number, since it is larger than the sum of its proper divisors (1).

981148313 is an equidigital number, since it uses as much as digits as its factorization.

981148313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 38.

The square root of 981148313 is about 31323.2870720811. The cubic root of 981148313 is about 993.6761981609.

It can be divided in two parts, 98 and 1148313, that added together give a palindrome (1148411).

The spelling of 981148313 in words is "nine hundred eighty-one million, one hundred forty-eight thousand, three hundred thirteen".