31338542 has 8 divisors (see below), whose sum is σ = 47044800. Its totient is φ = 15656944.

The previous prime is 31338539. The next prime is 31338547. The reversal of 31338542 is 24583313.

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

It is a super-3 number, since 3×31338542³ (a number of 23 digits) contains 333 as substring.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31338547) 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, 2567 + ... + 8322.

It is an arithmetic number, because the mean of its divisors is an integer number (5880600).

Almost surely, 2^31338542 is an apocalyptic number.

31338542 is a deficient number, since it is larger than the sum of its proper divisors (15706258).

31338542 is a wasteful number, since it uses less digits than its factorization.

31338542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12330.

The product of its digits is 8640, while the sum is 29.

The square root of 31338542 is about 5598.0837792945. The cubic root of 31338542 is about 315.2774644373.

The spelling of 31338542 in words is "thirty-one million, three hundred thirty-eight thousand, five hundred forty-two".