612331140 has 48 divisors (see below), whose sum is σ = 1726885440. Its totient is φ = 162111360.

The previous prime is 612331091. The next prime is 612331141. The reversal of 612331140 is 41133216.

It is not an unprimeable number, because it can be changed into a prime (612331141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28371 + ... + 45050.

It is an arithmetic number, because the mean of its divisors is an integer number (35976780).

Almost surely, 2^612331140 is an apocalyptic number.

612331140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

612331140 is an abundant number, since it is smaller than the sum of its proper divisors (1114554300).

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

612331140 is a wasteful number, since it uses less digits than its factorization.

612331140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73572 (or 73570 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 612331140 is about 24745.3256191952. The cubic root of 612331140 is about 849.1715757959.

Adding to 612331140 its reverse (41133216), we get a palindrome (653464356).

The spelling of 612331140 in words is "six hundred twelve million, three hundred thirty-one thousand, one hundred forty".