213172401674 has 8 divisors (see below), whose sum is σ = 319762970148. Its totient is φ = 106584744960.

The previous prime is 213172401641. The next prime is 213172401677. The reversal of 213172401674 is 476104271312.

It can be written as a sum of positive squares in 2 ways, for example, as 200314429225 + 12857972449 = 447565^2 + 113393^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×213172401674² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213172401677) 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, 534647 + ... + 843914.

Almost surely, 2^213172401674 is an apocalyptic number.

213172401674 is a deficient number, since it is larger than the sum of its proper divisors (106590568474).

213172401674 is a wasteful number, since it uses less digits than its factorization.

213172401674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455880.

The product of its (nonzero) digits is 56448, while the sum is 38.

Adding to 213172401674 its reverse (476104271312), we get a palindrome (689276672986).

The spelling of 213172401674 in words is "two hundred thirteen billion, one hundred seventy-two million, four hundred one thousand, six hundred seventy-four".