31480039 has 8 divisors (see below), whose sum is σ = 33961680. Its totient is φ = 29068416.

The previous prime is 31480021. The next prime is 31480049. The reversal of 31480039 is 93008413.

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 31480039 - 2¹¹ = 31477991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31479989 and 31480016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31480019) 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, 16569 + ... + 18370.

It is an arithmetic number, because the mean of its divisors is an integer number (4245210).

Almost surely, 2^31480039 is an apocalyptic number.

31480039 is a deficient number, since it is larger than the sum of its proper divisors (2481641).

31480039 is a wasteful number, since it uses less digits than its factorization.

31480039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35009.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 31480039 is about 5610.7075311408. The cubic root of 31480039 is about 315.7512563405.

The spelling of 31480039 in words is "thirty-one million, four hundred eighty thousand, thirty-nine".