213931674 has 24 divisors (see below), whose sum is σ = 505657152. Its totient is φ = 64827720.

The previous prime is 213931649. The next prime is 213931693. The reversal of 213931674 is 476139312.

It is a super-2 number, since 2×213931674² = 91533522280884552, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 540034 + ... + 540429.

It is an arithmetic number, because the mean of its divisors is an integer number (21069048).

Almost surely, 2^213931674 is an apocalyptic number.

213931674 is an abundant number, since it is smaller than the sum of its proper divisors (291725478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213931674 is a wasteful number, since it uses less digits than its factorization.

213931674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080482 (or 1080479 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 213931674 is about 14626.4033172889. The cubic root of 213931674 is about 598.0787378193.

The spelling of 213931674 in words is "two hundred thirteen million, nine hundred thirty-one thousand, six hundred seventy-four".