31064730 has 32 divisors (see below), whose sum is σ = 74850048. Its totient is φ = 8251200.

The previous prime is 31064711. The next prime is 31064741. The reversal of 31064730 is 3746013.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31064730.

It is an unprimeable number.

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, 6220 + ... + 10040.

It is an arithmetic number, because the mean of its divisors is an integer number (2339064).

Almost surely, 2^31064730 is an apocalyptic number.

31064730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31064730 is an abundant number, since it is smaller than the sum of its proper divisors (43785318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31064730 is a wasteful number, since it uses less digits than its factorization.

31064730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4102.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 31064730 is about 5573.5742571531. The cubic root of 31064730 is about 314.3565600816.

The spelling of 31064730 in words is "thirty-one million, sixty-four thousand, seven hundred thirty".