140931912 has 64 divisors (see below), whose sum is σ = 385689600. Its totient is φ = 42559040.

The previous prime is 140931871. The next prime is 140931937. The reversal of 140931912 is 219139041.

It is a self number, because there is not a number n which added to its sum of digits gives 140931912.

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, 94033 + ... + 95519.

It is an arithmetic number, because the mean of its divisors is an integer number (6026400).

Almost surely, 2^140931912 is an apocalyptic number.

140931912 is a gapful number since it is divisible by the number (12) 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 140931912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192844800).

140931912 is an abundant number, since it is smaller than the sum of its proper divisors (244757688).

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

140931912 is a wasteful number, since it uses less digits than its factorization.

140931912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866 (or 1862 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 140931912 is about 11871.4747188376. The cubic root of 140931912 is about 520.3989935785.

The spelling of 140931912 in words is "one hundred forty million, nine hundred thirty-one thousand, nine hundred twelve".