31795138 has 8 divisors (see below), whose sum is σ = 48036240. Its totient is φ = 15783060.

The previous prime is 31795123. The next prime is 31795147. The reversal of 31795138 is 83159713.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 31795097 and 31795106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56908 + ... + 57463.

It is an arithmetic number, because the mean of its divisors is an integer number (6004530).

Almost surely, 2^31795138 is an apocalyptic number.

31795138 is a deficient number, since it is larger than the sum of its proper divisors (16241102).

31795138 is a wasteful number, since it uses less digits than its factorization.

31795138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114512.

The product of its digits is 22680, while the sum is 37.

The square root of 31795138 is about 5638.7177620448. The cubic root of 31795138 is about 316.8012633121.

The spelling of 31795138 in words is "thirty-one million, seven hundred ninety-five thousand, one hundred thirty-eight".