213957032 has 8 divisors (see below), whose sum is σ = 401169450. Its totient is φ = 106978512.

The previous prime is 213957013. The next prime is 213957083. The reversal of 213957032 is 230759312.

It can be written as a sum of positive squares in only one way, i.e., 212984836 + 972196 = 14594^2 + 986^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×213957032² = 91555223084498048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213957032.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13372307 + ... + 13372322.

Almost surely, 2^213957032 is an apocalyptic number.

It is an amenable number.

213957032 is a deficient number, since it is larger than the sum of its proper divisors (187212418).

213957032 is a wasteful number, since it uses less digits than its factorization.

213957032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26744635 (or 26744631 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 213957032 is about 14627.2701485957. The cubic root of 213957032 is about 598.1023676090.

The spelling of 213957032 in words is "two hundred thirteen million, nine hundred fifty-seven thousand, thirty-two".