340479931 has 8 divisors (see below), whose sum is σ = 371665584. Its totient is φ = 309333120.

The previous prime is 340479929. The next prime is 340479941. The reversal of 340479931 is 139974043.

It is a happy number.

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 340479931 - 2¹ = 340479929 is a prime.

It is a super-2 number, since 2×340479931² = 231853166827529522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340479941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10455 + ... + 28111.

It is an arithmetic number, because the mean of its divisors is an integer number (46458198).

Almost surely, 2^340479931 is an apocalyptic number.

340479931 is a deficient number, since it is larger than the sum of its proper divisors (31185653).

340479931 is a wasteful number, since it uses less digits than its factorization.

340479931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19421.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 340479931 is about 18452.0982817673. The cubic root of 340479931 is about 698.2814516448.

The spelling of 340479931 in words is "three hundred forty million, four hundred seventy-nine thousand, nine hundred thirty-one".