340321131 has 12 divisors (see below), whose sum is σ = 507432640. Its totient is φ = 219561840.

The previous prime is 340321123. The next prime is 340321151. The reversal of 340321131 is 131123043.

340321131 is a `hidden beast` number, since 340 + 321 + 1 + 3 + 1 = 666.

It is not a de Polignac number, because 340321131 - 2³ = 340321123 is a prime.

It is a super-2 number, since 2×340321131² = 231636944410238322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340321151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 609616 + ... + 610173.

Almost surely, 2^340321131 is an apocalyptic number.

340321131 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

340321131 is a deficient number, since it is larger than the sum of its proper divisors (167111509).

340321131 is a wasteful number, since it uses less digits than its factorization.

340321131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219826 (or 1219823 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 340321131 is about 18447.7947462563. The cubic root of 340321131 is about 698.1728751638.

Adding to 340321131 its reverse (131123043), we get a palindrome (471444174).

The spelling of 340321131 in words is "three hundred forty million, three hundred twenty-one thousand, one hundred thirty-one".