31132123 has 8 divisors (see below), whose sum is σ = 34189056. Its totient is φ = 28113000.

The previous prime is 31132103. The next prime is 31132141. The reversal of 31132123 is 32123113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31132123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31132097 and 31132106.

It is not an unprimeable number, because it can be changed into a prime (31132103) 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, 7711 + ... + 11032.

It is an arithmetic number, because the mean of its divisors is an integer number (4273632).

Almost surely, 2^31132123 is an apocalyptic number.

31132123 is a deficient number, since it is larger than the sum of its proper divisors (3056933).

31132123 is a wasteful number, since it uses less digits than its factorization.

31132123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18905.

The product of its digits is 108, while the sum is 16.

The square root of 31132123 is about 5579.6167431106. The cubic root of 31132123 is about 314.5837215595.

Adding to 31132123 its reverse (32123113), we get a palindrome (63255236).

The spelling of 31132123 in words is "thirty-one million, one hundred thirty-two thousand, one hundred twenty-three".