355431505242 has 64 divisors (see below), whose sum is σ = 779792832000. Its totient is φ = 107110140480.

The previous prime is 355431505181. The next prime is 355431505309. The reversal of 355431505242 is 242505134553.

It is a self number, because there is not a number n which added to its sum of digits gives 355431505242.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8659384 + ... + 8700332.

It is an arithmetic number, because the mean of its divisors is an integer number (12184263000).

Almost surely, 2^355431505242 is an apocalyptic number.

355431505242 is an abundant number, since it is smaller than the sum of its proper divisors (424361326758).

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

355431505242 is a wasteful number, since it uses less digits than its factorization.

355431505242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41691.

The product of its (nonzero) digits is 360000, while the sum is 39.

Adding to 355431505242 its reverse (242505134553), we get a palindrome (597936639795).

The spelling of 355431505242 in words is "three hundred fifty-five billion, four hundred thirty-one million, five hundred five thousand, two hundred forty-two".