31433036490 has 96 divisors (see below), whose sum is σ = 84659374800. Its totient is φ = 8082063360.

The previous prime is 31433036477. The next prime is 31433036513. The reversal of 31433036490 is 9463033413.

31433036490 is a `hidden beast` number, since 3 + 1 + 4 + 3 + 3 + 0 + 3 + 649 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 22726467009 + 8706569481 = 150753^2 + 93309^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1999260 + ... + 2014920.

Almost surely, 2^31433036490 is an apocalyptic number.

31433036490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31433036490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42329687400).

31433036490 is an abundant number, since it is smaller than the sum of its proper divisors (53226338310).

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

31433036490 is a wasteful number, since it uses less digits than its factorization.

31433036490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16472 (or 16469 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 36.

The spelling of 31433036490 in words is "thirty-one billion, four hundred thirty-three million, thirty-six thousand, four hundred ninety".