213515140 has 12 divisors (see below), whose sum is σ = 448381836. Its totient is φ = 85406048.

The previous prime is 213515129. The next prime is 213515143. The reversal of 213515140 is 41515312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 55711296 + 157803844 = 7464^2 + 12562^2 .

It is not an unprimeable number, because it can be changed into a prime (213515143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5337859 + ... + 5337898.

It is an arithmetic number, because the mean of its divisors is an integer number (37365153).

Almost surely, 2^213515140 is an apocalyptic number.

213515140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213515140 is an abundant number, since it is smaller than the sum of its proper divisors (234866696).

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

213515140 is a wasteful number, since it uses less digits than its factorization.

213515140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10675766 (or 10675764 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 213515140 is about 14612.1572671526. The cubic root of 213515140 is about 597.6903241077.

The spelling of 213515140 in words is "two hundred thirteen million, five hundred fifteen thousand, one hundred forty".