351111420 has 144 divisors (see below), whose sum is σ = 1167409152. Its totient is φ = 84712320.

The previous prime is 351111407. The next prime is 351111457. The reversal of 351111420 is 24111153.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 351111393 and 351111402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 758109 + ... + 758571.

It is an arithmetic number, because the mean of its divisors is an integer number (8107008).

Almost surely, 2^351111420 is an apocalyptic number.

351111420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351111420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (583704576).

351111420 is an abundant number, since it is smaller than the sum of its proper divisors (816297732).

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

351111420 is a wasteful number, since it uses less digits than its factorization.

351111420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 351111420 is about 18737.9673390686. The cubic root of 351111420 is about 705.4750382235.

Adding to 351111420 its reverse (24111153), we get a palindrome (375222573).

The spelling of 351111420 in words is "three hundred fifty-one million, one hundred eleven thousand, four hundred twenty".