7860420331 has 2 divisors, whose sum is σ = 7860420332. Its totient is φ = 7860420330.

The previous prime is 7860420319. The next prime is 7860420353. The reversal of 7860420331 is 1330240687.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7860420331 is a prime.

It is a super-2 number, since 2×7860420331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7860420731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3930210165 + 3930210166.

It is an arithmetic number, because the mean of its divisors is an integer number (3930210166).

Almost surely, 2^7860420331 is an apocalyptic number.

7860420331 is a deficient number, since it is larger than the sum of its proper divisors (1).

7860420331 is an equidigital number, since it uses as much as digits as its factorization.

7860420331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 7860420331 is about 88659.0115611493. The cubic root of 7860420331 is about 1988.3000499673.

The spelling of 7860420331 in words is "seven billion, eight hundred sixty million, four hundred twenty thousand, three hundred thirty-one".