31428014 has 16 divisors (see below), whose sum is σ = 49798800. Its totient is φ = 14834304.

The previous prime is 31428013. The next prime is 31428029. The reversal of 31428014 is 41082413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31428013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10742 + ... + 13350.

It is an arithmetic number, because the mean of its divisors is an integer number (3112425).

Almost surely, 2^31428014 is an apocalyptic number.

31428014 is a deficient number, since it is larger than the sum of its proper divisors (18370786).

31428014 is a wasteful number, since it uses less digits than its factorization.

31428014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 31428014 is about 5606.0693895099. The cubic root of 31428014 is about 315.5772199542.

The spelling of 31428014 in words is "thirty-one million, four hundred twenty-eight thousand, fourteen".