240431633973 has 6 divisors (see below), whose sum is σ = 347290137974. Its totient is φ = 160287755976.

The previous prime is 240431633957. The next prime is 240431633999. The reversal of 240431633973 is 379336134042.

It is a happy number.

240431633973 is a `hidden beast` number, since 2 + 4 + 0 + 4 + 3 + 1 + 633 + 9 + 7 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 124258365009 + 116173268964 = 352503^2 + 340842^2 .

It is not a de Polignac number, because 240431633973 - 2⁴ = 240431633957 is a prime.

It is a super-2 number, since 2×240431633973² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240431633903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13357312990 + ... + 13357313007.

Almost surely, 2^240431633973 is an apocalyptic number.

It is an amenable number.

240431633973 is a deficient number, since it is larger than the sum of its proper divisors (106858504001).

240431633973 is a wasteful number, since it uses less digits than its factorization.

240431633973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26714626003 (or 26714626000 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 45.

The spelling of 240431633973 in words is "two hundred forty billion, four hundred thirty-one million, six hundred thirty-three thousand, nine hundred seventy-three".