31343039 has 8 divisors (see below), whose sum is σ = 38576160. Its totient is φ = 24798816.

The previous prime is 31343023. The next prime is 31343057. The reversal of 31343039 is 93034313.

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

It is not a de Polignac number, because 31343039 - 2⁴ = 31343023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31342999 and 31343017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313039) 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, 172124 + ... + 172305.

It is an arithmetic number, because the mean of its divisors is an integer number (4822020).

Almost surely, 2^31343039 is an apocalyptic number.

31343039 is a deficient number, since it is larger than the sum of its proper divisors (7233121).

31343039 is a wasteful number, since it uses less digits than its factorization.

31343039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344449.

The product of its (nonzero) digits is 2916, while the sum is 26.

The square root of 31343039 is about 5598.4854201829. The cubic root of 31343039 is about 315.2925442172.

The spelling of 31343039 in words is "thirty-one million, three hundred forty-three thousand, thirty-nine".