351331154420 has 48 divisors (see below), whose sum is σ = 751006291728. Its totient is φ = 138032087040.

The previous prime is 351331154407. The next prime is 351331154441. The reversal of 351331154420 is 24451133153.

It can be written as a sum of positive squares in 8 ways, for example, as 20029608676 + 331301545744 = 141526^2 + 575588^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147389 + ... + 851108.

It is an arithmetic number, because the mean of its divisors is an integer number (15645964411).

Almost surely, 2^351331154420 is an apocalyptic number.

It is an amenable number.

351331154420 is an abundant number, since it is smaller than the sum of its proper divisors (399675137308).

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

351331154420 is a wasteful number, since it uses less digits than its factorization.

351331154420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998820 (or 998818 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 351331154420 its reverse (24451133153), we get a palindrome (375782287573).

The spelling of 351331154420 in words is "three hundred fifty-one billion, three hundred thirty-one million, one hundred fifty-four thousand, four hundred twenty".