340520031 has 12 divisors (see below), whose sum is σ = 510079752. Its totient is φ = 227013192.

The previous prime is 340520021. The next prime is 340520051. The reversal of 340520031 is 130025043.

It is not a de Polignac number, because 340520031 - 2¹⁵ = 340487263 is a prime.

It is a super-2 number, since 2×340520031² = 231907783024481922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 340519986 and 340520013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340520021) 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 11 ways as a sum of consecutive naturals, for example, 700416 + ... + 700901.

It is an arithmetic number, because the mean of its divisors is an integer number (42506646).

Almost surely, 2^340520031 is an apocalyptic number.

340520031 is a deficient number, since it is larger than the sum of its proper divisors (169559721).

340520031 is an equidigital number, since it uses as much as digits as its factorization.

340520031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401332 (or 1401320 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 340520031 is about 18453.1848470664. The cubic root of 340520031 is about 698.3088639183.

Adding to 340520031 its reverse (130025043), we get a palindrome (470545074).

It can be divided in two parts, 3405 and 20031, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 340520031 in words is "three hundred forty million, five hundred twenty thousand, thirty-one".