343421132340 has 192 divisors, whose sum is σ = 1178804938752. Its totient is φ = 73508160000.

The previous prime is 343421132321. The next prime is 343421132357. The reversal of 343421132340 is 43231124343.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 343421132298 and 343421132307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 672786 + ... + 1067465.

It is an arithmetic number, because the mean of its divisors is an integer number (6139609056).

Almost surely, 2^343421132340 is an apocalyptic number.

343421132340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

343421132340 is an abundant number, since it is smaller than the sum of its proper divisors (835383806412).

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

343421132340 is a wasteful number, since it uses less digits than its factorization.

343421132340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740310 (or 1740308 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 343421132340 its reverse (43231124343), we get a palindrome (386652256683).

The spelling of 343421132340 in words is "three hundred forty-three billion, four hundred twenty-one million, one hundred thirty-two thousand, three hundred forty".