31134309 has 4 divisors (see below), whose sum is σ = 41512416. Its totient is φ = 20756204.

The previous prime is 31134289. The next prime is 31134347. The reversal of 31134309 is 90343113.

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 31134309 - 2⁵ = 31134277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31134349) 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 3 ways as a sum of consecutive naturals, for example, 5189049 + ... + 5189054.

It is an arithmetic number, because the mean of its divisors is an integer number (10378104).

Almost surely, 2^31134309 is an apocalyptic number.

It is an amenable number.

31134309 is a deficient number, since it is larger than the sum of its proper divisors (10378107).

31134309 is a wasteful number, since it uses less digits than its factorization.

31134309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10378106.

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

The square root of 31134309 is about 5579.8126312628. The cubic root of 31134309 is about 314.5910844145.

The spelling of 31134309 in words is "thirty-one million, one hundred thirty-four thousand, three hundred nine".