782240131 has 2 divisors, whose sum is σ = 782240132. Its totient is φ = 782240130.

The previous prime is 782240119. The next prime is 782240141. The reversal of 782240131 is 131042287.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 782240131 - 2⁵ = 782240099 is a prime.

It is a super-2 number, since 2×782240131² = 1223799245093794322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 782240131.

It is not a weakly prime, because it can be changed into another prime (782240101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391120065 + 391120066.

It is an arithmetic number, because the mean of its divisors is an integer number (391120066).

Almost surely, 2^782240131 is an apocalyptic number.

782240131 is a deficient number, since it is larger than the sum of its proper divisors (1).

782240131 is an equidigital number, since it uses as much as digits as its factorization.

782240131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 782240131 is about 27968.5561121771. The cubic root of 782240131 is about 921.3967956089.

The spelling of 782240131 in words is "seven hundred eighty-two million, two hundred forty thousand, one hundred thirty-one".