31433231020 has 24 divisors (see below), whose sum is σ = 69483985200. Its totient is φ = 11911540032.

The previous prime is 31433230987. The next prime is 31433231029. The reversal of 31433231020 is 2013233413.

It is a junction number, because it is equal to n+sod(n) for n = 31433230982 and 31433231000.

It is not an unprimeable number, because it can be changed into a prime (31433231029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41359135 + ... + 41359894.

It is an arithmetic number, because the mean of its divisors is an integer number (2895166050).

Almost surely, 2^31433231020 is an apocalyptic number.

It is an amenable number.

31433231020 is an abundant number, since it is smaller than the sum of its proper divisors (38050754180).

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

31433231020 is a wasteful number, since it uses less digits than its factorization.

31433231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82719057 (or 82719055 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31433231020 its reverse (2013233413), we get a palindrome (33446464433).

The spelling of 31433231020 in words is "thirty-one billion, four hundred thirty-three million, two hundred thirty-one thousand, twenty".