340724131 has 32 divisors (see below), whose sum is σ = 413614080. Its totient is φ = 277149600.

The previous prime is 340724123. The next prime is 340724159. The reversal of 340724131 is 131427043.

It is a cyclic number.

It is not a de Polignac number, because 340724131 - 2³ = 340724123 is a prime.

It is a super-2 number, since 2×340724131² = 232185866891410322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 340724096 and 340724105.

It is not an unprimeable number, because it can be changed into a prime (340724171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277986 + ... + 279208.

It is an arithmetic number, because the mean of its divisors is an integer number (12925440).

Almost surely, 2^340724131 is an apocalyptic number.

340724131 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

340724131 is a deficient number, since it is larger than the sum of its proper divisors (72889949).

340724131 is a wasteful number, since it uses less digits than its factorization.

340724131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 340724131 is about 18458.7142293281. The cubic root of 340724131 is about 698.4483528962.

The spelling of 340724131 in words is "three hundred forty million, seven hundred twenty-four thousand, one hundred thirty-one".