213677331 has 16 divisors (see below), whose sum is σ = 334404864. Its totient is φ = 118800864.

The previous prime is 213677297. The next prime is 213677339. The reversal of 213677331 is 133776312.

It is a happy number.

It is not a de Polignac number, because 213677331 - 2¹³ = 213669139 is a prime.

It is a super-2 number, since 2×213677331² = 91316003566567122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213677292 and 213677301.

It is not an unprimeable number, because it can be changed into a prime (213677339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136725 + ... + 138278.

It is an arithmetic number, because the mean of its divisors is an integer number (20900304).

Almost surely, 2^213677331 is an apocalyptic number.

213677331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

213677331 is a deficient number, since it is larger than the sum of its proper divisors (120727533).

213677331 is a wasteful number, since it uses less digits than its factorization.

213677331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275050.

The product of its digits is 15876, while the sum is 33.

The square root of 213677331 is about 14617.7060785884. The cubic root of 213677331 is about 597.8416255654.

The spelling of 213677331 in words is "two hundred thirteen million, six hundred seventy-seven thousand, three hundred thirty-one".