31047842 has 16 divisors (see below), whose sum is σ = 53313792. Its totient is φ = 13284000.

The previous prime is 31047839. The next prime is 31047851. The reversal of 31047842 is 24874013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9038 + ... + 11990.

It is an arithmetic number, because the mean of its divisors is an integer number (3332112).

Almost surely, 2^31047842 is an apocalyptic number.

31047842 is a deficient number, since it is larger than the sum of its proper divisors (22265950).

31047842 is a wasteful number, since it uses less digits than its factorization.

31047842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 31047842 is about 5572.0590449133. The cubic root of 31047842 is about 314.2995842560.

The spelling of 31047842 in words is "thirty-one million, forty-seven thousand, eight hundred forty-two".