31430229601 has 2 divisors, whose sum is σ = 31430229602. Its totient is φ = 31430229600.

The previous prime is 31430229599. The next prime is 31430229613. The reversal of 31430229601 is 10692203413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19302934225 + 12127295376 = 138935^2 + 110124^2 .

It is a cyclic number.

It is not a de Polignac number, because 31430229601 - 2¹ = 31430229599 is a prime.

Together with 31430229599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31430229101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15715114800 + 15715114801.

It is an arithmetic number, because the mean of its divisors is an integer number (15715114801).

Almost surely, 2^31430229601 is an apocalyptic number.

It is an amenable number.

31430229601 is a deficient number, since it is larger than the sum of its proper divisors (1).

31430229601 is an equidigital number, since it uses as much as digits as its factorization.

31430229601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 31430229601 in words is "thirty-one billion, four hundred thirty million, two hundred twenty-nine thousand, six hundred one".