31420061807 has 2 divisors, whose sum is σ = 31420061808. Its totient is φ = 31420061806.

The previous prime is 31420061641. The next prime is 31420061809. The reversal of 31420061807 is 70816002413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31420061807 - 2²² = 31415867503 is a prime.

Together with 31420061809, 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 (31420061809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15710030903 + 15710030904.

It is an arithmetic number, because the mean of its divisors is an integer number (15710030904).

Almost surely, 2^31420061807 is an apocalyptic number.

31420061807 is a deficient number, since it is larger than the sum of its proper divisors (1).

31420061807 is an equidigital number, since it uses as much as digits as its factorization.

31420061807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 31420061807 in words is "thirty-one billion, four hundred twenty million, sixty-one thousand, eight hundred seven".