3155230440 has 192 divisors, whose sum is σ = 11058465600. Its totient is φ = 777600000.

The previous prime is 3155230433. The next prime is 3155230457. The reversal of 3155230440 is 440325513.

3155230440 is a `hidden beast` number, since 315 + 5 + 2 + 304 + 40 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 274815 + ... + 286065.

It is an arithmetic number, because the mean of its divisors is an integer number (57596175).

Almost surely, 2^3155230440 is an apocalyptic number.

3155230440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3155230440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5529232800).

3155230440 is an abundant number, since it is smaller than the sum of its proper divisors (7903235160).

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

3155230440 is a wasteful number, since it uses less digits than its factorization.

3155230440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11328 (or 11321 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 3155230440 is about 56171.4379377990. The cubic root of 3155230440 is about 1466.7081133834.

Adding to 3155230440 its reverse (440325513), we get a palindrome (3595555953).

The spelling of 3155230440 in words is "three billion, one hundred fifty-five million, two hundred thirty thousand, four hundred forty".