123131132 has 24 divisors (see below), whose sum is σ = 222996480. Its totient is φ = 59428080.

The previous prime is 123131131. The next prime is 123131143. The reversal of 123131132 is 231131321.

It is a super-2 number, since 2×123131132² = 30322551335202848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123131132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123131131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59369 + ... + 61407.

It is an arithmetic number, because the mean of its divisors is an integer number (9291520).

Almost surely, 2^123131132 is an apocalyptic number.

It is an amenable number.

123131132 is a deficient number, since it is larger than the sum of its proper divisors (99865348).

123131132 is a wasteful number, since it uses less digits than its factorization.

123131132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561 (or 2559 counting only the distinct ones).

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

The square root of 123131132 is about 11096.4468186893. The cubic root of 123131132 is about 497.4956534388.

Adding to 123131132 its reverse (231131321), we get a palindrome (354262453).

The spelling of 123131132 in words is "one hundred twenty-three million, one hundred thirty-one thousand, one hundred thirty-two".