40510311421 has 2 divisors, whose sum is σ = 40510311422. Its totient is φ = 40510311420.

The previous prime is 40510311389. The next prime is 40510311451. The reversal of 40510311421 is 12411301504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39834571396 + 675740025 = 199586^2 + 25995^2 .

It is a cyclic number.

It is not a de Polignac number, because 40510311421 - 2⁵ = 40510311389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40510311392 and 40510311401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40510311451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20255155710 + 20255155711.

It is an arithmetic number, because the mean of its divisors is an integer number (20255155711).

Almost surely, 2^40510311421 is an apocalyptic number.

It is an amenable number.

40510311421 is a deficient number, since it is larger than the sum of its proper divisors (1).

40510311421 is an equidigital number, since it uses as much as digits as its factorization.

40510311421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 40510311421 its reverse (12411301504), we get a palindrome (52921612925).

The spelling of 40510311421 in words is "forty billion, five hundred ten million, three hundred eleven thousand, four hundred twenty-one".