3123211101973 has 2 divisors, whose sum is σ = 3123211101974. Its totient is φ = 3123211101972.

The previous prime is 3123211101947. The next prime is 3123211102019. The reversal of 3123211101973 is 3791011123213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3106980851569 + 16230250404 = 1762663^2 + 127398^2 .

It is a cyclic number.

It is not a de Polignac number, because 3123211101973 - 2¹³ = 3123211093781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3123211131973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561605550986 + 1561605550987.

It is an arithmetic number, because the mean of its divisors is an integer number (1561605550987).

Almost surely, 2^{3123211101973} is an apocalyptic number.

It is an amenable number.

3123211101973 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123211101973 is an equidigital number, since it uses as much as digits as its factorization.

3123211101973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The spelling of 3123211101973 in words is "three trillion, one hundred twenty-three billion, two hundred eleven million, one hundred one thousand, nine hundred seventy-three".