121031140 has 24 divisors (see below), whose sum is σ = 267543360. Its totient is φ = 45864288.

The previous prime is 121031117. The next prime is 121031147. The reversal of 121031140 is 41130121.

It is a self number, because there is not a number n which added to its sum of digits gives 121031140.

It is not an unprimeable number, because it can be changed into a prime (121031147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158872 + ... + 159631.

It is an arithmetic number, because the mean of its divisors is an integer number (11147640).

Almost surely, 2^121031140 is an apocalyptic number.

121031140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121031140 is an abundant number, since it is smaller than the sum of its proper divisors (146512220).

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

121031140 is a wasteful number, since it uses less digits than its factorization.

121031140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318531 (or 318529 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121031140 is about 11001.4153634885. The cubic root of 121031140 is about 494.6511707580.

Adding to 121031140 its reverse (41130121), we get a palindrome (162161261).

The spelling of 121031140 in words is "one hundred twenty-one million, thirty-one thousand, one hundred forty".