31004093 has 2 divisors, whose sum is σ = 31004094. Its totient is φ = 31004092.

The previous prime is 31004047. The next prime is 31004101. The reversal of 31004093 is 39040013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16662724 + 14341369 = 4082^2 + 3787^2 .

It is an emirp because it is prime and its reverse (39040013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31004093 - 2⁸ = 31003837 is a prime.

It is a super-2 number, since 2×31004093² = 1922507565505298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31004003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15502046 + 15502047.

It is an arithmetic number, because the mean of its divisors is an integer number (15502047).

Almost surely, 2^31004093 is an apocalyptic number.

It is an amenable number.

31004093 is a deficient number, since it is larger than the sum of its proper divisors (1).

31004093 is an equidigital number, since it uses as much as digits as its factorization.

31004093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 31004093 is about 5568.1319129489. The cubic root of 31004093 is about 314.1518900834.

The spelling of 31004093 in words is "thirty-one million, four thousand, ninety-three".