31434420461 has 2 divisors, whose sum is σ = 31434420462. Its totient is φ = 31434420460.

The previous prime is 31434420383. The next prime is 31434420463. The reversal of 31434420461 is 16402443413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17505936100 + 13928484361 = 132310^2 + 118019^2 .

It is a cyclic number.

It is not a de Polignac number, because 31434420461 - 2²⁶ = 31367311597 is a prime.

Together with 31434420463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31434420463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15717210230 + 15717210231.

It is an arithmetic number, because the mean of its divisors is an integer number (15717210231).

Almost surely, 2^31434420461 is an apocalyptic number.

It is an amenable number.

31434420461 is a deficient number, since it is larger than the sum of its proper divisors (1).

31434420461 is an equidigital number, since it uses as much as digits as its factorization.

31434420461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 31434420461 its reverse (16402443413), we get a palindrome (47836863874).

The spelling of 31434420461 in words is "thirty-one billion, four hundred thirty-four million, four hundred twenty thousand, four hundred sixty-one".