3215235540 has 48 divisors (see below), whose sum is σ = 9821085120. Its totient is φ = 779450880.

The previous prime is 3215235533. The next prime is 3215235547. The reversal of 3215235540 is 455325123.

It is an interprime number because it is at equal distance from previous prime (3215235533) and next prime (3215235547).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 3215235498 and 3215235507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3215235547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2435125 + ... + 2436444.

It is an arithmetic number, because the mean of its divisors is an integer number (204605940).

Almost surely, 2^3215235540 is an apocalyptic number.

3215235540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3215235540 is an abundant number, since it is smaller than the sum of its proper divisors (6605849580).

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

3215235540 is a wasteful number, since it uses less digits than its factorization.

3215235540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4871592 (or 4871590 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 3215235540 is about 56703.0470080753. The cubic root of 3215235540 is about 1475.9475730675.

The spelling of 3215235540 in words is "three billion, two hundred fifteen million, two hundred thirty-five thousand, five hundred forty".