126831 has 8 divisors (see below), whose sum is σ = 171904. Its totient is φ = 83160.

The previous prime is 126827. The next prime is 126839. The reversal of 126831 is 138621.

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

It is not a de Polignac number, because 126831 - 2² = 126827 is a prime.

It is a super-2 number, since 2×126831² = 32172205122, which contains 22 as substring.

It is a Duffinian number.

126831 is a lucky number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 126798 and 126807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126839) 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, 115 + ... + 516.

It is an arithmetic number, because the mean of its divisors is an integer number (21488).

2¹²⁶⁸³¹ is an apocalyptic number.

126831 is a deficient number, since it is larger than the sum of its proper divisors (45073).

126831 is an equidigital number, since it uses as much as digits as its factorization.

126831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701.

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

The square root of 126831 is about 356.1334019718. The cubic root of 126831 is about 50.2429509183.

The spelling of 126831 in words is "one hundred twenty-six thousand, eight hundred thirty-one".