40313432261 has 2 divisors, whose sum is σ = 40313432262. Its totient is φ = 40313432260.

The previous prime is 40313432227. The next prime is 40313432329. The reversal of 40313432261 is 16223431304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21776609761 + 18536822500 = 147569^2 + 136150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40313432261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40313432221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20156716130 + 20156716131.

It is an arithmetic number, because the mean of its divisors is an integer number (20156716131).

Almost surely, 2^40313432261 is an apocalyptic number.

It is an amenable number.

40313432261 is a deficient number, since it is larger than the sum of its proper divisors (1).

40313432261 is an equidigital number, since it uses as much as digits as its factorization.

40313432261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 40313432261 its reverse (16223431304), we get a palindrome (56536863565).

The spelling of 40313432261 in words is "forty billion, three hundred thirteen million, four hundred thirty-two thousand, two hundred sixty-one".