1231132126 has 16 divisors (see below), whose sum is σ = 2111616000. Its totient is φ = 527352120.

The previous prime is 1231132121. The next prime is 1231132141. The reversal of 1231132126 is 6212311321.

It is a happy number.

It is a super-3 number, since 3×1231132126³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231132097 and 1231132106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231132121) 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, 5991 + ... + 49981.

It is an arithmetic number, because the mean of its divisors is an integer number (131976000).

Almost surely, 2^1231132126 is an apocalyptic number.

1231132126 is a deficient number, since it is larger than the sum of its proper divisors (880483874).

1231132126 is a wasteful number, since it uses less digits than its factorization.

1231132126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45999.

The product of its digits is 432, while the sum is 22.

The square root of 1231132126 is about 35087.4924438895. The cubic root of 1231132126 is about 1071.7698969394.

Adding to 1231132126 its reverse (6212311321), we get a palindrome (7443443447).

The spelling of 1231132126 in words is "one billion, two hundred thirty-one million, one hundred thirty-two thousand, one hundred twenty-six".