31330403433421 has 16 divisors (see below), whose sum is σ = 34884672301440. Its totient is φ = 28002020682240.

The previous prime is 31330403433409. The next prime is 31330403433481. The reversal of 31330403433421 is 12433430403313.

It is a cyclic number.

It is not a de Polignac number, because 31330403433421 - 2⁵ = 31330403433389 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 (31330403433481) 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, 491024860 + ... + 491088661.

It is an arithmetic number, because the mean of its divisors is an integer number (2180292018840).

Almost surely, 2^{31330403433421} is an apocalyptic number.

It is an amenable number.

31330403433421 is a deficient number, since it is larger than the sum of its proper divisors (3554268868019).

31330403433421 is a wasteful number, since it uses less digits than its factorization.

31330403433421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982113636.

The product of its (nonzero) digits is 93312, while the sum is 34.

Adding to 31330403433421 its reverse (12433430403313), we get a palindrome (43763833836734).

The spelling of 31330403433421 in words is "thirty-one trillion, three hundred thirty billion, four hundred three million, four hundred thirty-three thousand, four hundred twenty-one".