40430331243 has 12 divisors (see below), whose sum is σ = 61834624488. Its totient is φ = 25368050880.

The previous prime is 40430331233. The next prime is 40430331251. The reversal of 40430331243 is 34213303404.

40430331243 is a `hidden beast` number, since 4 + 0 + 4 + 303 + 312 + 43 = 666.

It is not a de Polignac number, because 40430331243 - 2⁸ = 40430330987 is a prime.

It is a super-2 number, since 2×40430331243² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40430331203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132125113 + ... + 132125418.

It is an arithmetic number, because the mean of its divisors is an integer number (5152885374).

Almost surely, 2^40430331243 is an apocalyptic number.

40430331243 is a deficient number, since it is larger than the sum of its proper divisors (21404293245).

40430331243 is a wasteful number, since it uses less digits than its factorization.

40430331243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264250554 (or 264250551 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 40430331243 its reverse (34213303404), we get a palindrome (74643634647).

The spelling of 40430331243 in words is "forty billion, four hundred thirty million, three hundred thirty-one thousand, two hundred forty-three".