31459109 has 4 divisors (see below), whose sum is σ = 34319040. Its totient is φ = 28599180.

The previous prime is 31459093. The next prime is 31459111. The reversal of 31459109 is 90195413.

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.

It is a cyclic number.

It is not a de Polignac number, because 31459109 - 2⁴ = 31459093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31459199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1429949 + ... + 1429970.

It is an arithmetic number, because the mean of its divisors is an integer number (8579760).

Almost surely, 2^31459109 is an apocalyptic number.

It is an amenable number.

31459109 is a deficient number, since it is larger than the sum of its proper divisors (2859931).

31459109 is a wasteful number, since it uses less digits than its factorization.

31459109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859930.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 31459109 is about 5608.8420373549. The cubic root of 31459109 is about 315.6812634267.

The spelling of 31459109 in words is "thirty-one million, four hundred fifty-nine thousand, one hundred nine".