351240 has 32 divisors (see below), whose sum is σ = 1054080. Its totient is φ = 93632.

The previous prime is 351229. The next prime is 351257. The reversal of 351240 is 42153.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1344 + ... + 1583.

It is an arithmetic number, because the mean of its divisors is an integer number (32940).

2³⁵¹²⁴⁰ is an apocalyptic number.

351240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

351240 is an abundant number, since it is smaller than the sum of its proper divisors (702840).

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

351240 is a wasteful number, since it uses less digits than its factorization.

351240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941 (or 2937 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 351240 is about 592.6550430056. The cubic root of 351240 is about 70.5561144708.

Adding to 351240 its reverse (42153), we get a palindrome (393393).

It can be divided in two parts, 35 and 1240, that added together give a triangular number (1275 = T₅₀).

The spelling of 351240 in words is "three hundred fifty-one thousand, two hundred forty".