1331122973 has 2 divisors, whose sum is σ = 1331122974. Its totient is φ = 1331122972.

The previous prime is 1331122963. The next prime is 1331122987. The reversal of 1331122973 is 3792211331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1292905849 + 38217124 = 35957^2 + 6182^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331122973 - 2⁶ = 1331122909 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331122963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665561486 + 665561487.

It is an arithmetic number, because the mean of its divisors is an integer number (665561487).

Almost surely, 2^1331122973 is an apocalyptic number.

It is an amenable number.

1331122973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331122973 is an equidigital number, since it uses as much as digits as its factorization.

1331122973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 32.

The square root of 1331122973 is about 36484.5580074639. The cubic root of 1331122973 is about 1100.0338758162.

The spelling of 1331122973 in words is "one billion, three hundred thirty-one million, one hundred twenty-two thousand, nine hundred seventy-three".