331776009 has 12 divisors (see below), whose sum is σ = 479402352. Its totient is φ = 221105400.

The previous prime is 331776001. The next prime is 331776013. The reversal of 331776009 is 900677133.

331776009 is a `hidden beast` number, since 33 + 17 + 7 + 600 + 9 = 666.

It is not a de Polignac number, because 331776009 - 2³ = 331776001 is a prime.

It is a super-2 number, since 2×331776009² = 220150640295936162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331776001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32314 + ... + 41324.

It is an arithmetic number, because the mean of its divisors is an integer number (39950196).

Almost surely, 2^331776009 is an apocalyptic number.

It is an amenable number.

331776009 is a deficient number, since it is larger than the sum of its proper divisors (147626343).

331776009 is a wasteful number, since it uses less digits than its factorization.

331776009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13108 (or 13105 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 36.

The square root of 331776009 is about 18214.7195696228. The cubic root of 331776009 is about 692.2798000073.

It can be divided in two parts, 33177600 and 9, that multiplied together give a square (298598400 = 17280²).

The spelling of 331776009 in words is "three hundred thirty-one million, seven hundred seventy-six thousand, nine".