31489030 has 16 divisors (see below), whose sum is σ = 57211920. Its totient is φ = 12477472.

The previous prime is 31489027. The next prime is 31489037. The reversal of 31489030 is 3098413.

It is a self number, because there is not a number n which added to its sum of digits gives 31489030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31489037) by changing a digit.

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, 13645 + ... + 15784.

It is an arithmetic number, because the mean of its divisors is an integer number (3575745).

Almost surely, 2^31489030 is an apocalyptic number.

31489030 is a deficient number, since it is larger than the sum of its proper divisors (25722890).

31489030 is a wasteful number, since it uses less digits than its factorization.

31489030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29543.

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

The square root of 31489030 is about 5611.5087097856. The cubic root of 31489030 is about 315.7813140046.

The spelling of 31489030 in words is "thirty-one million, four hundred eighty-nine thousand, thirty".