340200031 has 4 divisors (see below), whose sum is σ = 340398072. Its totient is φ = 340001992.

The previous prime is 340200023. The next prime is 340200037. The reversal of 340200031 is 130002043.

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 340200031 - 2³ = 340200023 is a prime.

It is a super-2 number, since 2×340200031² = 231472122184801922, 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 = 340199984 and 340200020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340200037) 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, 96421 + ... + 99886.

It is an arithmetic number, because the mean of its divisors is an integer number (85099518).

Almost surely, 2^340200031 is an apocalyptic number.

340200031 is a deficient number, since it is larger than the sum of its proper divisors (198041).

340200031 is a wasteful number, since it uses less digits than its factorization.

340200031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198040.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 340200031 is about 18444.5122190857. The cubic root of 340200031 is about 698.0900526392.

Adding to 340200031 its reverse (130002043), we get a palindrome (470202074).

The spelling of 340200031 in words is "three hundred forty million, two hundred thousand, thirty-one".