31214109 has 8 divisors (see below), whose sum is σ = 41785632. Its totient is φ = 20726000.

The previous prime is 31214101. The next prime is 31214119. The reversal of 31214109 is 90141213.

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 31214109 - 2³ = 31214101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31214101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19974 + ... + 21479.

It is an arithmetic number, because the mean of its divisors is an integer number (5223204).

Almost surely, 2^31214109 is an apocalyptic number.

It is an amenable number.

31214109 is a deficient number, since it is larger than the sum of its proper divisors (10571523).

31214109 is a wasteful number, since it uses less digits than its factorization.

31214109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41707.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 31214109 is about 5586.9588328535. The cubic root of 31214109 is about 314.8596300756.

The spelling of 31214109 in words is "thirty-one million, two hundred fourteen thousand, one hundred nine".