340220431 has 8 divisors (see below), whose sum is σ = 354488400. Its totient is φ = 326121600.

The previous prime is 340220417. The next prime is 340220437. The reversal of 340220431 is 134022043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 340220431 - 2⁵ = 340220399 is a prime.

It is a super-2 number, since 2×340220431² = 231499883339651522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340220399 and 340220408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340220437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38170 + ... + 46231.

It is an arithmetic number, because the mean of its divisors is an integer number (44311050).

Almost surely, 2^340220431 is an apocalyptic number.

340220431 is a deficient number, since it is larger than the sum of its proper divisors (14267969).

340220431 is a wasteful number, since it uses less digits than its factorization.

340220431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84569.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 340220431 is about 18445.0652208118. The cubic root of 340220431 is about 698.1040059520.

Adding to 340220431 its reverse (134022043), we get a palindrome (474242474).

The spelling of 340220431 in words is "three hundred forty million, two hundred twenty thousand, four hundred thirty-one".