31434330203421 has 32 divisors (see below), whose sum is σ = 45063034828800. Its totient is φ = 19428268970880.

The previous prime is 31434330203407. The next prime is 31434330203447. The reversal of 31434330203421 is 12430203343413.

It is a happy number.

It is not a de Polignac number, because 31434330203421 - 2⁶ = 31434330203357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31434330203921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19479990 + ... + 21031848.

It is an arithmetic number, because the mean of its divisors is an integer number (1408219838400).

Almost surely, 2^{31434330203421} is an apocalyptic number.

It is an amenable number.

31434330203421 is a deficient number, since it is larger than the sum of its proper divisors (13628704625379).

31434330203421 is a wasteful number, since it uses less digits than its factorization.

31434330203421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559489.

The product of its (nonzero) digits is 62208, while the sum is 33.

Adding to 31434330203421 its reverse (12430203343413), we get a palindrome (43864533546834).

The spelling of 31434330203421 in words is "thirty-one trillion, four hundred thirty-four billion, three hundred thirty million, two hundred three thousand, four hundred twenty-one".