80311901 has 2 divisors, whose sum is σ = 80311902. Its totient is φ = 80311900.

The previous prime is 80311897. The next prime is 80311939. The reversal of 80311901 is 10911308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60295225 + 20016676 = 7765^2 + 4474^2 .

It is a cyclic number.

It is not a de Polignac number, because 80311901 - 2² = 80311897 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80311981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40155950 + 40155951.

It is an arithmetic number, because the mean of its divisors is an integer number (40155951).

Almost surely, 2^80311901 is an apocalyptic number.

It is an amenable number.

80311901 is a deficient number, since it is larger than the sum of its proper divisors (1).

80311901 is an equidigital number, since it uses as much as digits as its factorization.

80311901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 80311901 is about 8961.6907444968. The cubic root of 80311901 is about 431.4461871202.

The spelling of 80311901 in words is "eighty million, three hundred eleven thousand, nine hundred one".