3291381236 has 96 divisors (see below), whose sum is σ = 7212699648. Its totient is φ = 1292607360.

The previous prime is 3291381217. The next prime is 3291381239. The reversal of 3291381236 is 6321831923.

It is a self number, because there is not a number n which added to its sum of digits gives 3291381236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3291381239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 615671 + ... + 620993.

It is an arithmetic number, because the mean of its divisors is an integer number (75132288).

Almost surely, 2^3291381236 is an apocalyptic number.

It is an amenable number.

3291381236 is an abundant number, since it is smaller than the sum of its proper divisors (3921318412).

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

3291381236 is a wasteful number, since it uses less digits than its factorization.

3291381236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5421 (or 5419 counting only the distinct ones).

The product of its digits is 46656, while the sum is 38.

The square root of 3291381236 is about 57370.5607084330. The cubic root of 3291381236 is about 1487.5082952813.

The spelling of 3291381236 in words is "three billion, two hundred ninety-one million, three hundred eighty-one thousand, two hundred thirty-six".