31120093 has 4 divisors (see below), whose sum is σ = 31584640. Its totient is φ = 30655548.

The previous prime is 31120091. The next prime is 31120109. The reversal of 31120093 is 39002113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39002113 = 691 ⋅56443.

It is a cyclic number.

It is not a de Polignac number, because 31120093 - 2¹ = 31120091 is a prime.

It is a super-3 number, since 3×31120093³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31120093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120091) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 232173 + ... + 232306.

It is an arithmetic number, because the mean of its divisors is an integer number (7896160).

Almost surely, 2^31120093 is an apocalyptic number.

It is an amenable number.

31120093 is a deficient number, since it is larger than the sum of its proper divisors (464547).

31120093 is an equidigital number, since it uses as much as digits as its factorization.

31120093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464546.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 31120093 is about 5578.5386079152. The cubic root of 31120093 is about 314.5431961111.

The spelling of 31120093 in words is "thirty-one million, one hundred twenty thousand, ninety-three".