213481244 has 12 divisors (see below), whose sum is σ = 380641464. Its totient is φ = 104726544.

The previous prime is 213481211. The next prime is 213481249. The reversal of 213481244 is 442184312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213481249) 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, 503282 + ... + 503705.

It is an arithmetic number, because the mean of its divisors is an integer number (31720122).

Almost surely, 2^213481244 is an apocalyptic number.

It is an amenable number.

213481244 is a deficient number, since it is larger than the sum of its proper divisors (167160220).

213481244 is a wasteful number, since it uses less digits than its factorization.

213481244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007044 (or 1007042 counting only the distinct ones).

The product of its digits is 6144, while the sum is 29.

The square root of 213481244 is about 14610.9973649987. The cubic root of 213481244 is about 597.6586942142.

The spelling of 213481244 in words is "two hundred thirteen million, four hundred eighty-one thousand, two hundred forty-four".