31084091 has 8 divisors (see below), whose sum is σ = 31752000. Its totient is φ = 30421000.

The previous prime is 31084087. The next prime is 31084093. The reversal of 31084091 is 19048013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31084091 - 2² = 31084087 is a prime.

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 31084091.

It is not an unprimeable number, because it can be changed into a prime (31084093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13760 + ... + 15858.

It is an arithmetic number, because the mean of its divisors is an integer number (3969000).

Almost surely, 2^31084091 is an apocalyptic number.

31084091 is a deficient number, since it is larger than the sum of its proper divisors (667909).

31084091 is a wasteful number, since it uses less digits than its factorization.

31084091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 31084091 is about 5575.3108433521. The cubic root of 31084091 is about 314.4218537805.

The spelling of 31084091 in words is "thirty-one million, eighty-four thousand, ninety-one".