40131132281 has 2 divisors, whose sum is σ = 40131132282. Its totient is φ = 40131132280.

The previous prime is 40131132271. The next prime is 40131132317. The reversal of 40131132281 is 18223113104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25177755625 + 14953376656 = 158675^2 + 122284^2 .

It is a cyclic number.

It is not a de Polignac number, because 40131132281 - 2¹⁴ = 40131115897 is a prime.

It is a super-2 number, since 2×40131132281² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40131132281.

It is not a weakly prime, because it can be changed into another prime (40131132221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20065566140 + 20065566141.

It is an arithmetic number, because the mean of its divisors is an integer number (20065566141).

Almost surely, 2^40131132281 is an apocalyptic number.

It is an amenable number.

40131132281 is a deficient number, since it is larger than the sum of its proper divisors (1).

40131132281 is an equidigital number, since it uses as much as digits as its factorization.

40131132281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 40131132281 its reverse (18223113104), we get a palindrome (58354245385).

The spelling of 40131132281 in words is "forty billion, one hundred thirty-one million, one hundred thirty-two thousand, two hundred eighty-one".