3101220989 has 2 divisors, whose sum is σ = 3101220990. Its totient is φ = 3101220988.

The previous prime is 3101220973. The next prime is 3101221043. The reversal of 3101220989 is 9890221013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2657402500 + 443818489 = 51550^2 + 21067^2 .

It is a cyclic number.

It is not a de Polignac number, because 3101220989 - 2⁴ = 3101220973 is a prime.

It is a super-2 number, since 2×3101220989² = 19235143245228276242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3101223989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550610494 + 1550610495.

It is an arithmetic number, because the mean of its divisors is an integer number (1550610495).

Almost surely, 2^3101220989 is an apocalyptic number.

It is an amenable number.

3101220989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3101220989 is an equidigital number, since it uses as much as digits as its factorization.

3101220989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 3101220989 is about 55688.6073537488. The cubic root of 3101220989 is about 1458.2911433592.

The spelling of 3101220989 in words is "three billion, one hundred one million, two hundred twenty thousand, nine hundred eighty-nine".