31151123132 has 12 divisors (see below), whose sum is σ = 55782244056. Its totient is φ = 15213339120.

The previous prime is 31151123077. The next prime is 31151123137. The reversal of 31151123132 is 23132115113.

It is a junction number, because it is equal to n+sod(n) for n = 31151123098 and 31151123107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31151123137) 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, 90555419 + ... + 90555762.

It is an arithmetic number, because the mean of its divisors is an integer number (4648520338).

Almost surely, 2^31151123132 is an apocalyptic number.

It is an amenable number.

31151123132 is a deficient number, since it is larger than the sum of its proper divisors (24631120924).

31151123132 is a wasteful number, since it uses less digits than its factorization.

31151123132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181111228 (or 181111226 counting only the distinct ones).

The product of its digits is 540, while the sum is 23.

Adding to 31151123132 its reverse (23132115113), we get a palindrome (54283238245).

The spelling of 31151123132 in words is "thirty-one billion, one hundred fifty-one million, one hundred twenty-three thousand, one hundred thirty-two".