31433200489 has 2 divisors, whose sum is σ = 31433200490. Its totient is φ = 31433200488.

The previous prime is 31433200457. The next prime is 31433200499. The reversal of 31433200489 is 98400233413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25302310489 + 6130890000 = 159067^2 + 78300^2 .

It is a cyclic number.

It is not a de Polignac number, because 31433200489 - 2⁵ = 31433200457 is a prime.

It is not a weakly prime, because it can be changed into another prime (31433200429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15716600244 + 15716600245.

It is an arithmetic number, because the mean of its divisors is an integer number (15716600245).

Almost surely, 2^31433200489 is an apocalyptic number.

It is an amenable number.

31433200489 is a deficient number, since it is larger than the sum of its proper divisors (1).

31433200489 is an equidigital number, since it uses as much as digits as its factorization.

31433200489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 31433200489 in words is "thirty-one billion, four hundred thirty-three million, two hundred thousand, four hundred eighty-nine".