31433000420 has 48 divisors (see below), whose sum is σ = 67747518720. Its totient is φ = 12246330624.

The previous prime is 31433000419. The next prime is 31433000471. The reversal of 31433000420 is 2400033413.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 31433000392 and 31433000401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12524 + ... + 251043.

It is an arithmetic number, because the mean of its divisors is an integer number (1411406640).

Almost surely, 2^31433000420 is an apocalyptic number.

It is an amenable number.

31433000420 is an abundant number, since it is smaller than the sum of its proper divisors (36314518300).

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

31433000420 is a wasteful number, since it uses less digits than its factorization.

31433000420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263732 (or 263730 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 31433000420 its reverse (2400033413), we get a palindrome (33833033833).

The spelling of 31433000420 in words is "thirty-one billion, four hundred thirty-three million, four hundred twenty", and thus it is an aban number.