213403706 has 48 divisors (see below), whose sum is σ = 359468928. Its totient is φ = 94802400.

The previous prime is 213403699. The next prime is 213403739. The reversal of 213403706 is 607304312.

It is a super-2 number, since 2×213403706² = 91082283469068872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1178936 + ... + 1179116.

It is an arithmetic number, because the mean of its divisors is an integer number (7488936).

Almost surely, 2^213403706 is an apocalyptic number.

213403706 is a deficient number, since it is larger than the sum of its proper divisors (146065222).

213403706 is a wasteful number, since it uses less digits than its factorization.

213403706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 213403706 is about 14608.3437117286. The cubic root of 213403706 is about 597.5863274017.

The spelling of 213403706 in words is "two hundred thirteen million, four hundred three thousand, seven hundred six".