213769147 has 2 divisors, whose sum is σ = 213769148. Its totient is φ = 213769146.

The previous prime is 213769141. The next prime is 213769177. The reversal of 213769147 is 741967312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213769147 is a prime.

It is not a weakly prime, because it can be changed into another prime (213769141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106884573 + 106884574.

It is an arithmetic number, because the mean of its divisors is an integer number (106884574).

Almost surely, 2^213769147 is an apocalyptic number.

213769147 is a deficient number, since it is larger than the sum of its proper divisors (1).

213769147 is an equidigital number, since it uses as much as digits as its factorization.

213769147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The square root of 213769147 is about 14620.8463161337. The cubic root of 213769147 is about 597.9272430805.

The spelling of 213769147 in words is "two hundred thirteen million, seven hundred sixty-nine thousand, one hundred forty-seven".