31424770 has 32 divisors (see below), whose sum is σ = 61330752. Its totient is φ = 11524032.

The previous prime is 31424759. The next prime is 31424779. The reversal of 31424770 is 7742413.

It is not an unprimeable number, because it can be changed into a prime (31424779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20449 + ... + 21931.

It is an arithmetic number, because the mean of its divisors is an integer number (1916586).

Almost surely, 2^31424770 is an apocalyptic number.

31424770 is a deficient number, since it is larger than the sum of its proper divisors (29905982).

31424770 is a wasteful number, since it uses less digits than its factorization.

31424770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 31424770 is about 5605.7800527670. The cubic root of 31424770 is about 315.5663616190.

The spelling of 31424770 in words is "thirty-one million, four hundred twenty-four thousand, seven hundred seventy".