11931944330 has 64 divisors (see below), whose sum is σ = 23633510400. Its totient is φ = 4320164160.

The previous prime is 11931944317. The next prime is 11931944413. The reversal of 11931944330 is 3344913911.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon 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, 452489 + ... + 478131.

It is an arithmetic number, because the mean of its divisors is an integer number (369273600).

Almost surely, 2^11931944330 is an apocalyptic number.

11931944330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11931944330 is a deficient number, since it is larger than the sum of its proper divisors (11701566070).

11931944330 is a wasteful number, since it uses less digits than its factorization.

11931944330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25779.

The product of its (nonzero) digits is 34992, while the sum is 38.

The spelling of 11931944330 in words is "eleven billion, nine hundred thirty-one million, nine hundred forty-four thousand, three hundred thirty".