312232340 has 48 divisors (see below), whose sum is σ = 752707200. Its totient is φ = 106572672.

The previous prime is 312232321. The next prime is 312232351. The reversal of 312232340 is 43232213.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27191 + ... + 36929.

It is an arithmetic number, because the mean of its divisors is an integer number (15681400).

Almost surely, 2^312232340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312232340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376353600).

312232340 is an abundant number, since it is smaller than the sum of its proper divisors (440474860).

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

312232340 is a wasteful number, since it uses less digits than its factorization.

312232340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9984 (or 9982 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 312232340 is about 17670.0973398564. The cubic root of 312232340 is about 678.4106045358.

Adding to 312232340 its reverse (43232213), we get a palindrome (355464553).

The spelling of 312232340 in words is "three hundred twelve million, two hundred thirty-two thousand, three hundred forty".