312031230 has 64 divisors (see below), whose sum is σ = 859576320. Its totient is φ = 71011584.

The previous prime is 312031219. The next prime is 312031259. The reversal of 312031230 is 32130213.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47082 + ... + 53298.

It is an arithmetic number, because the mean of its divisors is an integer number (13430880).

Almost surely, 2^312031230 is an apocalyptic number.

312031230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 312031230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (429788160).

312031230 is an abundant number, since it is smaller than the sum of its proper divisors (547545090).

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

312031230 is a wasteful number, since it uses less digits than its factorization.

312031230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6473.

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

The square root of 312031230 is about 17664.4057358293. The cubic root of 312031230 is about 678.2649176626.

Adding to 312031230 its reverse (32130213), we get a palindrome (344161443).

The spelling of 312031230 in words is "three hundred twelve million, thirty-one thousand, two hundred thirty".