31004793 has 12 divisors (see below), whose sum is σ = 44837988. Its totient is φ = 20645280.

The previous prime is 31004791. The next prime is 31004801. The reversal of 31004793 is 39740013.

It can be written as a sum of positive squares in 2 ways, for example, as 30173049 + 831744 = 5493^2 + 912^2 .

It is not a de Polignac number, because 31004793 - 2¹ = 31004791 is a prime.

It is a super-2 number, since 2×31004793² = 1922594377945698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31004791) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 9171 + ... + 12087.

It is an arithmetic number, because the mean of its divisors is an integer number (3736499).

Almost surely, 2^31004793 is an apocalyptic number.

It is an amenable number.

31004793 is a deficient number, since it is larger than the sum of its proper divisors (13833195).

31004793 is a wasteful number, since it uses less digits than its factorization.

31004793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104 (or 4101 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 31004793 is about 5568.1947703003. The cubic root of 31004793 is about 314.1542543376.

The spelling of 31004793 in words is "thirty-one million, four thousand, seven hundred ninety-three".