431141277877 has 2 divisors, whose sum is σ = 431141277878. Its totient is φ = 431141277876.

The previous prime is 431141277821. The next prime is 431141277947. The reversal of 431141277877 is 778772141134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 423793188036 + 7348089841 = 650994^2 + 85721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431141277877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431141277277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215570638938 + 215570638939.

It is an arithmetic number, because the mean of its divisors is an integer number (215570638939).

Almost surely, 2^431141277877 is an apocalyptic number.

It is an amenable number.

431141277877 is a deficient number, since it is larger than the sum of its proper divisors (1).

431141277877 is an equidigital number, since it uses as much as digits as its factorization.

431141277877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1843968, while the sum is 52.

The spelling of 431141277877 in words is "four hundred thirty-one billion, one hundred forty-one million, two hundred seventy-seven thousand, eight hundred seventy-seven".