351243172 has 36 divisors (see below), whose sum is σ = 717050880. Its totient is φ = 150107664.

The previous prime is 351243163. The next prime is 351243181. The reversal of 351243172 is 271342153.

It is an interprime number because it is at equal distance from previous prime (351243163) and next prime (351243181).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 351243172.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72729 + ... + 77407.

It is an arithmetic number, because the mean of its divisors is an integer number (19918080).

Almost surely, 2^351243172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351243172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358525440).

351243172 is an abundant number, since it is smaller than the sum of its proper divisors (365807708).

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

351243172 is a wasteful number, since it uses less digits than its factorization.

351243172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5080 (or 5071 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 351243172 is about 18741.4826521276. The cubic root of 351243172 is about 705.5632686430.

The spelling of 351243172 in words is "three hundred fifty-one million, two hundred forty-three thousand, one hundred seventy-two".