340111231 has 4 divisors (see below), whose sum is σ = 360117792. Its totient is φ = 320104672.

The previous prime is 340111181. The next prime is 340111249. The reversal of 340111231 is 132111043.

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 340111231 - 2⁷ = 340111103 is a prime.

It is a super-2 number, since 2×340111231² = 231351298904670722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340111271) 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, 10003255 + ... + 10003288.

It is an arithmetic number, because the mean of its divisors is an integer number (90029448).

Almost surely, 2^340111231 is an apocalyptic number.

340111231 is a deficient number, since it is larger than the sum of its proper divisors (20006561).

340111231 is a wasteful number, since it uses less digits than its factorization.

340111231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20006560.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 340111231 is about 18442.1048419100. The cubic root of 340111231 is about 698.0293081894.

Adding to 340111231 its reverse (132111043), we get a palindrome (472222274).

The spelling of 340111231 in words is "three hundred forty million, one hundred eleven thousand, two hundred thirty-one".