981031486013 has 2 divisors, whose sum is σ = 981031486014. Its totient is φ = 981031486012.

The previous prime is 981031486009. The next prime is 981031486049. The reversal of 981031486013 is 310684130189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 980262366724 + 769119289 = 990082^2 + 27733^2 .

It is a cyclic number.

It is not a de Polignac number, because 981031486013 - 2² = 981031486009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981031486063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490515743006 + 490515743007.

It is an arithmetic number, because the mean of its divisors is an integer number (490515743007).

Almost surely, 2^981031486013 is an apocalyptic number.

It is an amenable number.

981031486013 is a deficient number, since it is larger than the sum of its proper divisors (1).

981031486013 is an equidigital number, since it uses as much as digits as its factorization.

981031486013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 981031486013 in words is "nine hundred eighty-one billion, thirty-one million, four hundred eighty-six thousand, thirteen".