31043130 has 16 divisors (see below), whose sum is σ = 74503584. Its totient is φ = 8278160.

The previous prime is 31043101. The next prime is 31043141. The reversal of 31043130 is 3134013.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517356 + ... + 517415.

It is an arithmetic number, because the mean of its divisors is an integer number (4656474).

Almost surely, 2^31043130 is an apocalyptic number.

31043130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31043130 is an abundant number, since it is smaller than the sum of its proper divisors (43460454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31043130 is a wasteful number, since it uses less digits than its factorization.

31043130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034781.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 31043130 is about 5571.6362049222. The cubic root of 31043130 is about 314.2836834776.

Adding to 31043130 its reverse (3134013), we get a palindrome (34177143).

The spelling of 31043130 in words is "thirty-one million, forty-three thousand, one hundred thirty".