3213109997 has 2 divisors, whose sum is σ = 3213109998. Its totient is φ = 3213109996.

The previous prime is 3213109993. The next prime is 3213110023. The reversal of 3213109997 is 7999013123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2478645796 + 734464201 = 49786^2 + 27101^2 .

It is a cyclic number.

It is not a de Polignac number, because 3213109997 - 2² = 3213109993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3213109993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606554998 + 1606554999.

It is an arithmetic number, because the mean of its divisors is an integer number (1606554999).

Almost surely, 2^3213109997 is an apocalyptic number.

It is an amenable number.

3213109997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3213109997 is an equidigital number, since it uses as much as digits as its factorization.

3213109997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 3213109997 is about 56684.3011512006. The cubic root of 3213109997 is about 1475.6222592542.

The spelling of 3213109997 in words is "three billion, two hundred thirteen million, one hundred nine thousand, nine hundred ninety-seven".