31341309 has 8 divisors (see below), whose sum is σ = 42361152. Its totient is φ = 20607840.

The previous prime is 31341301. The next prime is 31341361. The reversal of 31341309 is 90314313.

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

It is not a de Polignac number, because 31341309 - 2³ = 31341301 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31341301) 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, 71337 + ... + 71774.

It is an arithmetic number, because the mean of its divisors is an integer number (5295144).

Almost surely, 2^31341309 is an apocalyptic number.

It is an amenable number.

31341309 is a deficient number, since it is larger than the sum of its proper divisors (11019843).

31341309 is a wasteful number, since it uses less digits than its factorization.

31341309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143187.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 31341309 is about 5598.3309119772. The cubic root of 31341309 is about 315.2867431829.

The spelling of 31341309 in words is "thirty-one million, three hundred forty-one thousand, three hundred nine".