213430454 has 4 divisors (see below), whose sum is σ = 320145684. Its totient is φ = 106715226.

The previous prime is 213430453. The next prime is 213430487. The reversal of 213430454 is 454034312.

213430454 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 super-2 number, since 2×213430454² = 91105117389292232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213430453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53357612 + ... + 53357615.

It is an arithmetic number, because the mean of its divisors is an integer number (80036421).

Almost surely, 2^213430454 is an apocalyptic number.

213430454 is a deficient number, since it is larger than the sum of its proper divisors (106715230).

213430454 is a wasteful number, since it uses less digits than its factorization.

213430454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106715229.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 213430454 is about 14609.2591872415. The cubic root of 213430454 is about 597.6112934963.

Adding to 213430454 its reverse (454034312), we get a palindrome (667464766).

The spelling of 213430454 in words is "two hundred thirteen million, four hundred thirty thousand, four hundred fifty-four".