340432031 has 4 divisors (see below), whose sum is σ = 344257200. Its totient is φ = 336606864.

The previous prime is 340432019. The next prime is 340432129. The reversal of 340432031 is 130234043.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 340432031 - 2¹⁸ = 340169887 is a prime.

It is a super-2 number, since 2×340432031² = 231787935461569922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340431994 and 340432012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340432831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1912451 + ... + 1912628.

It is an arithmetic number, because the mean of its divisors is an integer number (86064300).

Almost surely, 2^340432031 is an apocalyptic number.

340432031 is a deficient number, since it is larger than the sum of its proper divisors (3825169).

340432031 is an equidigital number, since it uses as much as digits as its factorization.

340432031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825168.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 340432031 is about 18450.8002807466. The cubic root of 340432031 is about 698.2487044869.

Adding to 340432031 its reverse (130234043), we get a palindrome (470666074).

The spelling of 340432031 in words is "three hundred forty million, four hundred thirty-two thousand, thirty-one".