122731930 has 16 divisors (see below), whose sum is σ = 221071104. Its totient is φ = 49058640.

The previous prime is 122731927. The next prime is 122732009. The reversal of 122731930 is 39137221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14959 + ... + 21661.

It is an arithmetic number, because the mean of its divisors is an integer number (13816944).

Almost surely, 2^122731930 is an apocalyptic number.

122731930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122731930 is a deficient number, since it is larger than the sum of its proper divisors (98339174).

122731930 is a wasteful number, since it uses less digits than its factorization.

122731930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8541.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 122731930 is about 11078.4443853819. Note that the first 3 decimals coincide. The cubic root of 122731930 is about 496.9574297536.

The spelling of 122731930 in words is "one hundred twenty-two million, seven hundred thirty-one thousand, nine hundred thirty".