213711128 has 8 divisors (see below), whose sum is σ = 400708380. Its totient is φ = 106855560.

The previous prime is 213711109. The next prime is 213711133. The reversal of 213711128 is 821117312.

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

It is a junction number, because it is equal to n+sod(n) for n = 213711097 and 213711106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13356938 + ... + 13356953.

Almost surely, 2^213711128 is an apocalyptic number.

It is an amenable number.

213711128 is a deficient number, since it is larger than the sum of its proper divisors (186997252).

213711128 is a wasteful number, since it uses less digits than its factorization.

213711128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26713897 (or 26713893 counting only the distinct ones).

The product of its digits is 672, while the sum is 26.

The square root of 213711128 is about 14618.8620624179. The cubic root of 213711128 is about 597.8731437867.

The spelling of 213711128 in words is "two hundred thirteen million, seven hundred eleven thousand, one hundred twenty-eight".