331428373 has 2 divisors, whose sum is σ = 331428374. Its totient is φ = 331428372.

The previous prime is 331428341. The next prime is 331428401. The reversal of 331428373 is 373824133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 326055249 + 5373124 = 18057^2 + 2318^2 .

It is a cyclic number.

It is not a de Polignac number, because 331428373 - 2⁵ = 331428341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331428323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165714186 + 165714187.

It is an arithmetic number, because the mean of its divisors is an integer number (165714187).

Almost surely, 2^331428373 is an apocalyptic number.

It is an amenable number.

331428373 is a deficient number, since it is larger than the sum of its proper divisors (1).

331428373 is an equidigital number, since it uses as much as digits as its factorization.

331428373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 34.

The square root of 331428373 is about 18205.1743468718. The cubic root of 331428373 is about 692.0379244866.

The spelling of 331428373 in words is "three hundred thirty-one million, four hundred twenty-eight thousand, three hundred seventy-three".