351311420 has 24 divisors (see below), whose sum is σ = 747096000. Its totient is φ = 138745152.

The previous prime is 351311393. The next prime is 351311447. The reversal of 351311420 is 24113153.

It is an interprime number because it is at equal distance from previous prime (351311393) and next prime (351311447).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 351311392 and 351311401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109595 + ... + 112754.

It is an arithmetic number, because the mean of its divisors is an integer number (31129000).

Almost surely, 2^351311420 is an apocalyptic number.

It is an amenable number.

351311420 is an abundant number, since it is smaller than the sum of its proper divisors (395784580).

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

351311420 is a wasteful number, since it uses less digits than its factorization.

351311420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222437 (or 222435 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 351311420 is about 18743.3033374590. The cubic root of 351311420 is about 705.6089636367.

Adding to 351311420 its reverse (24113153), we get a palindrome (375424573).

The spelling of 351311420 in words is "three hundred fifty-one million, three hundred eleven thousand, four hundred twenty".