808140731 has 2 divisors, whose sum is σ = 808140732. Its totient is φ = 808140730.

The previous prime is 808140727. The next prime is 808140757. The reversal of 808140731 is 137041808.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 808140731 - 2² = 808140727 is a prime.

It is a super-2 number, since 2×808140731² = 1306182882202428722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (808145731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404070365 + 404070366.

It is an arithmetic number, because the mean of its divisors is an integer number (404070366).

Almost surely, 2^808140731 is an apocalyptic number.

808140731 is a deficient number, since it is larger than the sum of its proper divisors (1).

808140731 is an equidigital number, since it uses as much as digits as its factorization.

808140731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 808140731 is about 28427.8161489763. The cubic root of 808140731 is about 931.4559731415.

The spelling of 808140731 in words is "eight hundred eight million, one hundred forty thousand, seven hundred thirty-one".