31431343410421 has 8 divisors (see below), whose sum is σ = 31949509145184. Its totient is φ = 30913271153520.

The previous prime is 31431343410377. The next prime is 31431343410473. The reversal of 31431343410421 is 12401434313413.

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 31431343410421 - 2¹¹ = 31431343408373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31431343410491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22691275 + ... + 24036568.

It is an arithmetic number, because the mean of its divisors is an integer number (3993688643148).

Almost surely, 2^{31431343410421} is an apocalyptic number.

It is an amenable number.

31431343410421 is a deficient number, since it is larger than the sum of its proper divisors (518165734763).

31431343410421 is a wasteful number, since it uses less digits than its factorization.

31431343410421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46738931.

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 31431343410421 its reverse (12401434313413), we get a palindrome (43832777723834).

The spelling of 31431343410421 in words is "thirty-one trillion, four hundred thirty-one billion, three hundred forty-three million, four hundred ten thousand, four hundred twenty-one".