31232302421 has 8 divisors (see below), whose sum is σ = 31280667264. Its totient is φ = 31183966800.

The previous prime is 31232302399. The next prime is 31232302433. The reversal of 31232302421 is 12420323213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31232302421 is a prime.

It is a super-2 number, since 2×31232302421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232302921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3071696 + ... + 3081846.

It is an arithmetic number, because the mean of its divisors is an integer number (3910083408).

Almost surely, 2^31232302421 is an apocalyptic number.

It is an amenable number.

31232302421 is a deficient number, since it is larger than the sum of its proper divisors (48364843).

31232302421 is a wasteful number, since it uses less digits than its factorization.

31232302421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14611.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31232302421 its reverse (12420323213), we get a palindrome (43652625634).

The spelling of 31232302421 in words is "thirty-one billion, two hundred thirty-two million, three hundred two thousand, four hundred twenty-one".