126163831 has 4 divisors (see below), whose sum is σ = 130233664. Its totient is φ = 122094000.

The previous prime is 126163789. The next prime is 126163837. The reversal of 126163831 is 138361621.

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 126163831 - 2⁷ = 126163703 is a prime.

It is a super-2 number, since 2×126163831² = 31834624505193122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 4069801 = 126163831 / (1 + 2 + 6 + 1 + 6 + 3 + 8 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126163793 and 126163802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126163837) 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, 2034870 + ... + 2034931.

It is an arithmetic number, because the mean of its divisors is an integer number (32558416).

Almost surely, 2^126163831 is an apocalyptic number.

126163831 is a deficient number, since it is larger than the sum of its proper divisors (4069833).

126163831 is an equidigital number, since it uses as much as digits as its factorization.

126163831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069832.

The product of its digits is 5184, while the sum is 31.

The square root of 126163831 is about 11232.2674024437. The cubic root of 126163831 is about 501.5469834151.

The spelling of 126163831 in words is "one hundred twenty-six million, one hundred sixty-three thousand, eight hundred thirty-one".