351331112240 has 20 divisors (see below), whose sum is σ = 816844836144. Its totient is φ = 140532444864.

The previous prime is 351331112207. The next prime is 351331112281. The reversal of 351331112240 is 42211133153.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2195819372 + ... + 2195819531.

Almost surely, 2^351331112240 is an apocalyptic number.

It is an amenable number.

351331112240 is an abundant number, since it is smaller than the sum of its proper divisors (465513723904).

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

351331112240 is a wasteful number, since it uses less digits than its factorization.

351331112240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391638916 (or 4391638910 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 351331112240 its reverse (42211133153), we get a palindrome (393542245393).

The spelling of 351331112240 in words is "three hundred fifty-one billion, three hundred thirty-one million, one hundred twelve thousand, two hundred forty".