343511404240 has 80 divisors (see below), whose sum is σ = 824702501376. Its totient is φ = 132927782400.

The previous prime is 343511404193. The next prime is 343511404279. The reversal of 343511404240 is 42404115343.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7966579 + ... + 8009581.

Almost surely, 2^343511404240 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 343511404240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412351250688).

343511404240 is an abundant number, since it is smaller than the sum of its proper divisors (481191097136).

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

343511404240 is a wasteful number, since it uses less digits than its factorization.

343511404240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46268 (or 46262 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 343511404240 its reverse (42404115343), we get a palindrome (385915519583).

The spelling of 343511404240 in words is "three hundred forty-three billion, five hundred eleven million, four hundred four thousand, two hundred forty".