31312606 has 16 divisors (see below), whose sum is σ = 53558064. Its totient is φ = 13601664.

The previous prime is 31312597. The next prime is 31312613. The reversal of 31312606 is 60621313.

It is a super-2 number, since 2×31312606² = 1960958589022472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 34980 + ... + 35863.

It is an arithmetic number, because the mean of its divisors is an integer number (3347379).

Almost surely, 2^31312606 is an apocalyptic number.

31312606 is a deficient number, since it is larger than the sum of its proper divisors (22245458).

31312606 is a wasteful number, since it uses less digits than its factorization.

31312606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70875.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 31312606 is about 5595.7667928533. The cubic root of 31312606 is about 315.1904651427.

Adding to 31312606 its reverse (60621313), we get a palindrome (91933919).

The spelling of 31312606 in words is "thirty-one million, three hundred twelve thousand, six hundred six".