40312430221 has 16 divisors (see below), whose sum is σ = 46881275904. Its totient is φ = 33948764784.

The previous prime is 40312430219. The next prime is 40312430231. The reversal of 40312430221 is 12203421304.

It is a cyclic number.

It is not a de Polignac number, because 40312430221 - 2¹ = 40312430219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40312430192 and 40312430201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40312430201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67416 + ... + 291838.

It is an arithmetic number, because the mean of its divisors is an integer number (2930079744).

Almost surely, 2^40312430221 is an apocalyptic number.

It is an amenable number.

40312430221 is a deficient number, since it is larger than the sum of its proper divisors (6568845683).

40312430221 is a wasteful number, since it uses less digits than its factorization.

40312430221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224880.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 40312430221 its reverse (12203421304), we get a palindrome (52515851525).

The spelling of 40312430221 in words is "forty billion, three hundred twelve million, four hundred thirty thousand, two hundred twenty-one".