31420021429 has 8 divisors (see below), whose sum is σ = 32016904992. Its totient is φ = 30823288080.

The previous prime is 31420021417. The next prime is 31420021531. The reversal of 31420021429 is 92412002413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31420021429 - 2⁷ = 31420021301 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31420021397 and 31420021406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31420021729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442422 + ... + 508504.

It is an arithmetic number, because the mean of its divisors is an integer number (4002113124).

Almost surely, 2^31420021429 is an apocalyptic number.

It is an amenable number.

31420021429 is a deficient number, since it is larger than the sum of its proper divisors (596883563).

31420021429 is an equidigital number, since it uses as much as digits as its factorization.

31420021429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75107.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 31420021429 in words is "thirty-one billion, four hundred twenty million, twenty-one thousand, four hundred twenty-nine".