126603231 has 4 divisors (see below), whose sum is σ = 168804312. Its totient is φ = 84402152.

The previous prime is 126603221. The next prime is 126603259. The reversal of 126603231 is 132306621.

It is a happy number.

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 126603231 - 2¹⁰ = 126602207 is a prime.

It is a super-3 number, since 3×126603231³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126603221) 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, 21100536 + ... + 21100541.

It is an arithmetic number, because the mean of its divisors is an integer number (42201078).

Almost surely, 2^126603231 is an apocalyptic number.

126603231 is a deficient number, since it is larger than the sum of its proper divisors (42201081).

126603231 is an equidigital number, since it uses as much as digits as its factorization.

126603231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42201080.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 126603231 is about 11251.8101210427. The cubic root of 126603231 is about 502.1285668806.

Adding to 126603231 its reverse (132306621), we get a palindrome (258909852).

The spelling of 126603231 in words is "one hundred twenty-six million, six hundred three thousand, two hundred thirty-one".