213977033 has 2 divisors, whose sum is σ = 213977034. Its totient is φ = 213977032.

The previous prime is 213976979. The next prime is 213977047. The reversal of 213977033 is 330779312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213510544 + 466489 = 14612^2 + 683^2 .

It is a cyclic number.

It is not a de Polignac number, because 213977033 - 2⁶ = 213976969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 213976984 and 213977002.

It is not a weakly prime, because it can be changed into another prime (213976033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106988516 + 106988517.

It is an arithmetic number, because the mean of its divisors is an integer number (106988517).

Almost surely, 2^213977033 is an apocalyptic number.

It is an amenable number.

213977033 is a deficient number, since it is larger than the sum of its proper divisors (1).

213977033 is an equidigital number, since it uses as much as digits as its factorization.

213977033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 35.

The square root of 213977033 is about 14627.9538213654. The cubic root of 213977033 is about 598.1210041745.

The spelling of 213977033 in words is "two hundred thirteen million, nine hundred seventy-seven thousand, thirty-three".