231426111 has 8 divisors (see below), whose sum is σ = 352649344. Its totient is φ = 132243480.

The previous prime is 231426103. The next prime is 231426121. The reversal of 231426111 is 111624132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231426111 - 2³ = 231426103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 11020291 = 231426111 / (2 + 3 + 1 + 4 + 2 + 6 + 1 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231426101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5510125 + ... + 5510166.

It is an arithmetic number, because the mean of its divisors is an integer number (44081168).

Almost surely, 2^231426111 is an apocalyptic number.

231426111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231426111 is a deficient number, since it is larger than the sum of its proper divisors (121223233).

231426111 is a wasteful number, since it uses less digits than its factorization.

231426111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11020301.

The product of its digits is 288, while the sum is 21.

The square root of 231426111 is about 15212.6957177221. The cubic root of 231426111 is about 613.9562890859.

The spelling of 231426111 in words is "two hundred thirty-one million, four hundred twenty-six thousand, one hundred eleven".