355531220030 has 32 divisors (see below), whose sum is σ = 733685743296. Its totient is φ = 121511879424.

The previous prime is 355531220029. The next prime is 355531220039. The reversal of 355531220030 is 30022135553.

It is a junction number, because it is equal to n+sod(n) for n = 355531219975 and 355531220002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355531220039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7988879 + ... + 8033258.

It is an arithmetic number, because the mean of its divisors is an integer number (22927679478).

Almost surely, 2^355531220030 is an apocalyptic number.

355531220030 is an abundant number, since it is smaller than the sum of its proper divisors (378154523266).

355531220030 is a wasteful number, since it uses less digits than its factorization.

355531220030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16022468.

The product of its (nonzero) digits is 13500, while the sum is 29.

Adding to 355531220030 its reverse (30022135553), we get a palindrome (385553355583).

The spelling of 355531220030 in words is "three hundred fifty-five billion, five hundred thirty-one million, two hundred twenty thousand, thirty".