340203231 has 6 divisors (see below), whose sum is σ = 491404680. Its totient is φ = 226802148.

The previous prime is 340203221. The next prime is 340203251. The reversal of 340203231 is 132302043.

340203231 is a `hidden beast` number, since 340 + 2 + 0 + 323 + 1 = 666.

It is not a de Polignac number, because 340203231 - 2⁹ = 340202719 is a prime.

It is a super-2 number, since 2×340203231² = 231476476765678722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340203221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18900171 + ... + 18900188.

It is an arithmetic number, because the mean of its divisors is an integer number (81900780).

Almost surely, 2^340203231 is an apocalyptic number.

340203231 is a deficient number, since it is larger than the sum of its proper divisors (151201449).

340203231 is a wasteful number, since it uses less digits than its factorization.

340203231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37800365 (or 37800362 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 340203231 is about 18444.5989655509. The cubic root of 340203231 is about 698.0922414310.

Adding to 340203231 its reverse (132302043), we get a palindrome (472505274).

The spelling of 340203231 in words is "three hundred forty million, two hundred three thousand, two hundred thirty-one".