31434421433420 has 48 divisors (see below), whose sum is σ = 68095063743840. Its totient is φ = 12180042929664.

The previous prime is 31434421433399. The next prime is 31434421433423. The reversal of 31434421433420 is 2433412443413.

It is not an unprimeable number, because it can be changed into a prime (31434421433423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93397985 + ... + 93733944.

It is an arithmetic number, because the mean of its divisors is an integer number (1418647161330).

Almost surely, 2^{31434421433420} is an apocalyptic number.

It is an amenable number.

31434421433420 is an abundant number, since it is smaller than the sum of its proper divisors (36660642310420).

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

31434421433420 is a wasteful number, since it uses less digits than its factorization.

31434421433420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187132202 (or 187132200 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 38.

Adding to 31434421433420 its reverse (2433412443413), we get a palindrome (33867833876833).

The spelling of 31434421433420 in words is "thirty-one trillion, four hundred thirty-four billion, four hundred twenty-one million, four hundred thirty-three thousand, four hundred twenty".