106012981 has 2 divisors, whose sum is σ = 106012982. Its totient is φ = 106012980.

The previous prime is 106012939. The next prime is 106012987. The reversal of 106012981 is 189210601.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105884100 + 128881 = 10290^2 + 359^2 .

It is a cyclic number.

It is not a de Polignac number, because 106012981 - 2⁹ = 106012469 is a prime.

It is a super-2 number, since 2×106012981² = 22477504281012722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106012987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53006490 + 53006491.

It is an arithmetic number, because the mean of its divisors is an integer number (53006491).

Almost surely, 2^106012981 is an apocalyptic number.

It is an amenable number.

106012981 is a deficient number, since it is larger than the sum of its proper divisors (1).

106012981 is an equidigital number, since it uses as much as digits as its factorization.

106012981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 106012981 is about 10296.2605347767. The cubic root of 106012981 is about 473.2816672540.

It can be divided in two parts, 1060 and 12981, that added together give a palindrome (14041).

The spelling of 106012981 in words is "one hundred six million, twelve thousand, nine hundred eighty-one".