31340811 has 8 divisors (see below), whose sum is σ = 42054544. Its totient is φ = 20760480.

The previous prime is 31340767. The next prime is 31340831. The reversal of 31340811 is 11804313.

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

It is not a de Polignac number, because 31340811 - 2¹³ = 31332619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31340831) 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, 32800 + ... + 33741.

It is an arithmetic number, because the mean of its divisors is an integer number (5256818).

Almost surely, 2^31340811 is an apocalyptic number.

31340811 is a deficient number, since it is larger than the sum of its proper divisors (10713733).

31340811 is a wasteful number, since it uses less digits than its factorization.

31340811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66701.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 31340811 is about 5598.2864342583. The cubic root of 31340811 is about 315.2850732502.

The spelling of 31340811 in words is "thirty-one million, three hundred forty thousand, eight hundred eleven".