95311981 has 2 divisors, whose sum is σ = 95311982. Its totient is φ = 95311980.

The previous prime is 95311973. The next prime is 95312017. The reversal of 95311981 is 18911359.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87721956 + 7590025 = 9366^2 + 2755^2 .

It is a cyclic number.

It is not a de Polignac number, because 95311981 - 2³ = 95311973 is a prime.

It is a super-2 number, since 2×95311981² = 18168747444288722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 95311981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (95311681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47655990 + 47655991.

It is an arithmetic number, because the mean of its divisors is an integer number (47655991).

Almost surely, 2^95311981 is an apocalyptic number.

It is an amenable number.

95311981 is a deficient number, since it is larger than the sum of its proper divisors (1).

95311981 is an equidigital number, since it uses as much as digits as its factorization.

95311981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 37.

The square root of 95311981 is about 9762.7855143909. The cubic root of 95311981 is about 456.7892051030.

The spelling of 95311981 in words is "ninety-five million, three hundred eleven thousand, nine hundred eighty-one".