31946835421 has 16 divisors (see below), whose sum is σ = 33916506624. Its totient is φ = 29987345664.

The previous prime is 31946835419. The next prime is 31946835451. The reversal of 31946835421 is 12453864913.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31946835421 - 2¹ = 31946835419 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 (31946835451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13967740 + ... + 13970026.

It is an arithmetic number, because the mean of its divisors is an integer number (2119781664).

Almost surely, 2^31946835421 is an apocalyptic number.

It is an amenable number.

31946835421 is a deficient number, since it is larger than the sum of its proper divisors (1969671203).

31946835421 is a wasteful number, since it uses less digits than its factorization.

31946835421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4140.

The product of its digits is 622080, while the sum is 46.

The spelling of 31946835421 in words is "thirty-one billion, nine hundred forty-six million, eight hundred thirty-five thousand, four hundred twenty-one".