240745905231 has 64 divisors (see below), whose sum is σ = 359543654400. Its totient is φ = 142270442496.

The previous prime is 240745905199. The next prime is 240745905259. The reversal of 240745905231 is 132509547042.

It is a happy number.

It is not a de Polignac number, because 240745905231 - 2⁵ = 240745905199 is a prime.

It is a super-2 number, since 2×240745905231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240745905271) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 256932195 + ... + 256933131.

It is an arithmetic number, because the mean of its divisors is an integer number (5617869600).

Almost surely, 2^240745905231 is an apocalyptic number.

240745905231 is a deficient number, since it is larger than the sum of its proper divisors (118797749169).

240745905231 is a wasteful number, since it uses less digits than its factorization.

240745905231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968.

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 240745905231 in words is "two hundred forty billion, seven hundred forty-five million, nine hundred five thousand, two hundred thirty-one".