3215145140 has 24 divisors (see below), whose sum is σ = 6756372000. Its totient is φ = 1285188128.

The previous prime is 3215145133. The next prime is 3215145161. The reversal of 3215145140 is 415415123.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23642 + ... + 83601.

It is an arithmetic number, because the mean of its divisors is an integer number (281515500).

Almost surely, 2^3215145140 is an apocalyptic number.

It is an amenable number.

3215145140 is an abundant number, since it is smaller than the sum of its proper divisors (3541226860).

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

3215145140 is a wasteful number, since it uses less digits than its factorization.

3215145140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108751 (or 108749 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 3215145140 is about 56702.2498671790. The cubic root of 3215145140 is about 1475.9337402903.

The spelling of 3215145140 in words is "three billion, two hundred fifteen million, one hundred forty-five thousand, one hundred forty".