331620022 has 4 divisors (see below), whose sum is σ = 497430036. Its totient is φ = 165810010.

The previous prime is 331620019. The next prime is 331620043. The reversal of 331620022 is 220026133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 220026133 = 107 ⋅2056319.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82905004 + ... + 82905007.

It is an arithmetic number, because the mean of its divisors is an integer number (124357509).

Almost surely, 2^331620022 is an apocalyptic number.

331620022 is a deficient number, since it is larger than the sum of its proper divisors (165810014).

331620022 is a wasteful number, since it uses less digits than its factorization.

331620022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165810013.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 331620022 is about 18210.4371721274. The cubic root of 331620022 is about 692.1712894719.

Adding to 331620022 its reverse (220026133), we get a palindrome (551646155).

The spelling of 331620022 in words is "three hundred thirty-one million, six hundred twenty thousand, twenty-two".