213040148 has 12 divisors (see below), whose sum is σ = 385676340. Its totient is φ = 102846912.

The previous prime is 213040127. The next prime is 213040171. The reversal of 213040148 is 841040312.

It can be written as a sum of positive squares in 2 ways, for example, as 172869904 + 40170244 = 13148^2 + 6338^2 .

It is a super-2 number, since 2×213040148² = 90772209319723808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 918161 + ... + 918392.

It is an arithmetic number, because the mean of its divisors is an integer number (32139695).

Almost surely, 2^213040148 is an apocalyptic number.

It is an amenable number.

213040148 is a deficient number, since it is larger than the sum of its proper divisors (172636192).

213040148 is a wasteful number, since it uses less digits than its factorization.

213040148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836586 (or 1836584 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 213040148 is about 14595.8949023347. The cubic root of 213040148 is about 597.2467819375.

The spelling of 213040148 in words is "two hundred thirteen million, forty thousand, one hundred forty-eight".