213151454 has 4 divisors (see below), whose sum is σ = 319727184. Its totient is φ = 106575726.

The previous prime is 213151453. The next prime is 213151469. The reversal of 213151454 is 454151312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213151453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53287862 + ... + 53287865.

It is an arithmetic number, because the mean of its divisors is an integer number (79931796).

Almost surely, 2^213151454 is an apocalyptic number.

213151454 is a deficient number, since it is larger than the sum of its proper divisors (106575730).

213151454 is a wasteful number, since it uses less digits than its factorization.

213151454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106575729.

The product of its digits is 2400, while the sum is 26.

The square root of 213151454 is about 14599.7073258336. The cubic root of 213151454 is about 597.3507773221.

The spelling of 213151454 in words is "two hundred thirteen million, one hundred fifty-one thousand, four hundred fifty-four".