31946835420 has 72 divisors (see below), whose sum is σ = 97023597216. Its totient is φ = 8508765312.

The previous prime is 31946835419. The next prime is 31946835451. The reversal of 31946835420 is 2453864913.

31946835420 is a `hidden beast` number, since 3 + 194 + 6 + 8 + 35 + 420 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40314 + ... + 255966.

Almost surely, 2^31946835420 is an apocalyptic number.

31946835420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31946835420 is an abundant number, since it is smaller than the sum of its proper divisors (65076761796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31946835420 is a wasteful number, since it uses less digits than its factorization.

31946835420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216491 (or 216486 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 31946835420 in words is "thirty-one billion, nine hundred forty-six million, eight hundred thirty-five thousand, four hundred twenty".