331231106 has 4 divisors (see below), whose sum is σ = 496846662. Its totient is φ = 165615552.

The previous prime is 331231099. The next prime is 331231129. The reversal of 331231106 is 601132133.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 601132133 = 7 ⋅85876019.

It can be written as a sum of positive squares in only one way, i.e., 295530481 + 35700625 = 17191^2 + 5975^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82807775 + ... + 82807778.

Almost surely, 2^331231106 is an apocalyptic number.

331231106 is a deficient number, since it is larger than the sum of its proper divisors (165615556).

331231106 is a wasteful number, since it uses less digits than its factorization.

331231106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165615555.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 331231106 is about 18199.7556577005. The cubic root of 331231106 is about 691.9005963334.

Adding to 331231106 its reverse (601132133), we get a palindrome (932363239).

The spelling of 331231106 in words is "three hundred thirty-one million, two hundred thirty-one thousand, one hundred six".