340343031 has 16 divisors (see below), whose sum is σ = 524448000. Its totient is φ = 192295488.

The previous prime is 340343021. The next prime is 340343039. The reversal of 340343031 is 130343043.

It is not a de Polignac number, because 340343031 - 2⁵ = 340342999 is a prime.

It is a super-2 number, since 2×340343031² = 231666757500533922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 340342989 and 340343007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340343039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89181 + ... + 92918.

It is an arithmetic number, because the mean of its divisors is an integer number (32778000).

Almost surely, 2^340343031 is an apocalyptic number.

340343031 is a deficient number, since it is larger than the sum of its proper divisors (184104969).

340343031 is a wasteful number, since it uses less digits than its factorization.

340343031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182198.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 340343031 is about 18448.3883035890. The cubic root of 340343031 is about 698.1878508800.

Adding to 340343031 its reverse (130343043), we get a palindrome (470686074).

The spelling of 340343031 in words is "three hundred forty million, three hundred forty-three thousand, thirty-one".