240481197931 has 4 divisors (see below), whose sum is σ = 258979751632. Its totient is φ = 221982644232.

The previous prime is 240481197881. The next prime is 240481197949. The reversal of 240481197931 is 139791184042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240481197931 is a prime.

It is a super-2 number, since 2×240481197931² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240481197031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9249276831 + ... + 9249276856.

It is an arithmetic number, because the mean of its divisors is an integer number (64744937908).

Almost surely, 2^240481197931 is an apocalyptic number.

240481197931 is a deficient number, since it is larger than the sum of its proper divisors (18498553701).

240481197931 is a wasteful number, since it uses less digits than its factorization.

240481197931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18498553700.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 240481197931 in words is "two hundred forty billion, four hundred eighty-one million, one hundred ninety-seven thousand, nine hundred thirty-one".