343251421943378 has 64 divisors (see below), whose sum is σ = 587652939468000. Its totient is φ = 149214996080640.

The previous prime is 343251421943377. The next prime is 343251421943401. The reversal of 343251421943378 is 873349124152343.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 2677795141609 + 340573626801769 = 1636397^2 + 18454637^2 .

It is not an unprimeable number, because it can be changed into a prime (343251421943377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307748648 + ... + 308861996.

Almost surely, 2^{343251421943378} is an apocalyptic number.

343251421943378 is a deficient number, since it is larger than the sum of its proper divisors (244401517524622).

343251421943378 is a wasteful number, since it uses less digits than its factorization.

343251421943378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123407.

The product of its digits is 52254720, while the sum is 59.

The spelling of 343251421943378 in words is "three hundred forty-three trillion, two hundred fifty-one billion, four hundred twenty-one million, nine hundred forty-three thousand, three hundred seventy-eight".