126733231 has 4 divisors (see below), whose sum is σ = 127109632. Its totient is φ = 126356832.

The previous prime is 126733223. The next prime is 126733259. The reversal of 126733231 is 132337621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132337621 = 13 ⋅10179817.

It is a cyclic number.

It is not a de Polignac number, because 126733231 - 2³ = 126733223 is a prime.

It is a super-2 number, since 2×126733231² = 32122623679398722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126733231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126733331) 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, 187695 + ... + 188368.

It is an arithmetic number, because the mean of its divisors is an integer number (31777408).

Almost surely, 2^126733231 is an apocalyptic number.

126733231 is a deficient number, since it is larger than the sum of its proper divisors (376401).

126733231 is an equidigital number, since it uses as much as digits as its factorization.

126733231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376400.

The product of its digits is 4536, while the sum is 28.

The square root of 126733231 is about 11257.5854871282. The cubic root of 126733231 is about 502.3003749859.

The spelling of 126733231 in words is "one hundred twenty-six million, seven hundred thirty-three thousand, two hundred thirty-one".