1231130132 has 12 divisors (see below), whose sum is σ = 2155733076. Its totient is φ = 615206400.

The previous prime is 1231130129. The next prime is 1231130143. The reversal of 1231130132 is 2310311321.

It can be written as a sum of positive squares in 2 ways, for example, as 301855876 + 929274256 = 17374^2 + 30484^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1231130132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81869 + ... + 95732.

It is an arithmetic number, because the mean of its divisors is an integer number (179644423).

Almost surely, 2^1231130132 is an apocalyptic number.

It is an amenable number.

1231130132 is a deficient number, since it is larger than the sum of its proper divisors (924602944).

1231130132 is a wasteful number, since it uses less digits than its factorization.

1231130132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179338 (or 179336 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1231130132 is about 35087.4640291942. The cubic root of 1231130132 is about 1071.7693183093.

Adding to 1231130132 its reverse (2310311321), we get a palindrome (3541441453).

The spelling of 1231130132 in words is "one billion, two hundred thirty-one million, one hundred thirty thousand, one hundred thirty-two".