347131980 has 240 divisors, whose sum is σ = 1198701504. Its totient is φ = 83566080.

The previous prime is 347131969. The next prime is 347131997. The reversal of 347131980 is 89131743.

It is a happy number.

It is a super-2 number, since 2×347131980² = 241001223077440800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1116025 + ... + 1116335.

Almost surely, 2^347131980 is an apocalyptic number.

347131980 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 347131980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (599350752).

347131980 is an abundant number, since it is smaller than the sum of its proper divisors (851569524).

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

347131980 is a wasteful number, since it uses less digits than its factorization.

347131980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 347131980 is about 18631.4782022254. The cubic root of 347131980 is about 702.7996585518.

The spelling of 347131980 in words is "three hundred forty-seven million, one hundred thirty-one thousand, nine hundred eighty".