331980001 has 2 divisors, whose sum is σ = 331980002. Its totient is φ = 331980000.

The previous prime is 331979957. The next prime is 331980017. The reversal of 331980001 is 100089133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235469025 + 96510976 = 15345^2 + 9824^2 .

It is a cyclic number.

It is not a de Polignac number, because 331980001 - 2¹¹ = 331977953 is a prime.

It is a super-2 number, since 2×331980001² = 220421442127920002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331980401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165990000 + 165990001.

It is an arithmetic number, because the mean of its divisors is an integer number (165990001).

Almost surely, 2^331980001 is an apocalyptic number.

It is an amenable number.

331980001 is a deficient number, since it is larger than the sum of its proper divisors (1).

331980001 is an equidigital number, since it uses as much as digits as its factorization.

331980001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 331980001 is about 18220.3183561649. The cubic root of 331980001 is about 692.4216533503.

The spelling of 331980001 in words is "three hundred thirty-one million, nine hundred eighty thousand, one".