331213026 has 16 divisors (see below), whose sum is σ = 672313824. Its totient is φ = 108756384.

The previous prime is 331213019. The next prime is 331213061. The reversal of 331213026 is 620312133.

It is a junction number, because it is equal to n+sod(n) for n = 331212993 and 331213011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411555 + ... + 412358.

It is an arithmetic number, because the mean of its divisors is an integer number (42019614).

Almost surely, 2^331213026 is an apocalyptic number.

331213026 is an abundant number, since it is smaller than the sum of its proper divisors (341100798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331213026 is a wasteful number, since it uses less digits than its factorization.

331213026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823985.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 331213026 is about 18199.2589409569. The cubic root of 331213026 is about 691.8880071470. Note that the first 3 decimals are identical.

Adding to 331213026 its reverse (620312133), we get a palindrome (951525159).

The spelling of 331213026 in words is "three hundred thirty-one million, two hundred thirteen thousand, twenty-six".