31232100421 has 8 divisors (see below), whose sum is σ = 33057533600. Its totient is φ = 29424831120.

The previous prime is 31232100353. The next prime is 31232100433. The reversal of 31232100421 is 12400123213.

It is a happy number.

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 31232100421 - 2⁷ = 31232100293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232100481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4537431 + ... + 4544308.

It is an arithmetic number, because the mean of its divisors is an integer number (4132191700).

Almost surely, 2^31232100421 is an apocalyptic number.

It is an amenable number.

31232100421 is a deficient number, since it is larger than the sum of its proper divisors (1825433179).

31232100421 is a wasteful number, since it uses less digits than its factorization.

31232100421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9081939.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31232100421 its reverse (12400123213), we get a palindrome (43632223634).

The spelling of 31232100421 in words is "thirty-one billion, two hundred thirty-two million, one hundred thousand, four hundred twenty-one".