126831135 has 32 divisors (see below), whose sum is σ = 215628480. Its totient is φ = 63438848.

The previous prime is 126831119. The next prime is 126831143. The reversal of 126831135 is 531138621.

It is a cyclic number.

It is not a de Polignac number, because 126831135 - 2⁴ = 126831119 is a prime.

It is a super-2 number, since 2×126831135² = 32172273610776450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89311 + ... + 90719.

It is an arithmetic number, because the mean of its divisors is an integer number (6738390).

Almost surely, 2^126831135 is an apocalyptic number.

126831135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

126831135 is a deficient number, since it is larger than the sum of its proper divisors (88797345).

126831135 is a wasteful number, since it uses less digits than its factorization.

126831135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787.

The product of its digits is 4320, while the sum is 30.

The square root of 126831135 is about 11261.9330045956. The cubic root of 126831135 is about 502.4296874467.

Adding to 126831135 its reverse (531138621), we get a palindrome (657969756).

The spelling of 126831135 in words is "one hundred twenty-six million, eight hundred thirty-one thousand, one hundred thirty-five".