331632426 has 16 divisors (see below), whose sum is σ = 678690144. Its totient is φ = 107973264.

The previous prime is 331632407. The next prime is 331632437. The reversal of 331632426 is 624236133.

It is a junction number, because it is equal to n+sod(n) for n = 331632393 and 331632402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642441 + ... + 642956.

It is an arithmetic number, because the mean of its divisors is an integer number (42418134).

Almost surely, 2^331632426 is an apocalyptic number.

331632426 is an abundant number, since it is smaller than the sum of its proper divisors (347057718).

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

331632426 is a wasteful number, since it uses less digits than its factorization.

331632426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285445.

The product of its digits is 15552, while the sum is 30.

The square root of 331632426 is about 18210.7777428643. Note that the first 4 decimals coincide. The cubic root of 331632426 is about 692.1799194148.

Adding to 331632426 its reverse (624236133), we get a palindrome (955868559).

The spelling of 331632426 in words is "three hundred thirty-one million, six hundred thirty-two thousand, four hundred twenty-six".