213452431 has 4 divisors (see below), whose sum is σ = 214988200. Its totient is φ = 211916664.

The previous prime is 213452429. The next prime is 213452461. The reversal of 213452431 is 134254312.

213452431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213452431 - 2¹ = 213452429 is a prime.

It is a super-2 number, since 2×213452431² = 91123880599619522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213452396 and 213452405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213452461) 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, 767676 + ... + 767953.

It is an arithmetic number, because the mean of its divisors is an integer number (53747050).

Almost surely, 2^213452431 is an apocalyptic number.

213452431 is a deficient number, since it is larger than the sum of its proper divisors (1535769).

213452431 is a wasteful number, since it uses less digits than its factorization.

213452431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535768.

The product of its digits is 2880, while the sum is 25.

The square root of 213452431 is about 14610.0113278532. The cubic root of 213452431 is about 597.6318048657.

The spelling of 213452431 in words is "two hundred thirteen million, four hundred fifty-two thousand, four hundred thirty-one".