1010981 has 2 divisors, whose sum is σ = 1010982. Its totient is φ = 1010980.

The previous prime is 1010957. The next prime is 1010983. The reversal of 1010981 is 1890101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 982081 + 28900 = 991^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010981 - 2⁶ = 1010917 is a prime.

It is a super-2 number, since 2×1010981² = 2044165164722, which contains 22 as substring.

Together with 1010983, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505490 + 505491.

It is an arithmetic number, because the mean of its divisors is an integer number (505491).

2^1010981 is an apocalyptic number.

It is an amenable number.

1010981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010981 is an equidigital number, since it uses as much as digits as its factorization.

1010981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 1010981 is about 1005.4755093984. The cubic root of 1010981 is about 100.3647016435.

It can be divided in two parts, 1010 and 981, that added together give a palindrome (1991).

The spelling of 1010981 in words is "one million, ten thousand, nine hundred eighty-one".