46781213 has 2 divisors, whose sum is σ = 46781214. Its totient is φ = 46781212.

The previous prime is 46781197. The next prime is 46781221. The reversal of 46781213 is 31218764.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34128964 + 12652249 = 5842^2 + 3557^2 .

It is a cyclic number.

It is not a de Polignac number, because 46781213 - 2⁴ = 46781197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 46781213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46786213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23390606 + 23390607.

It is an arithmetic number, because the mean of its divisors is an integer number (23390607).

Almost surely, 2^46781213 is an apocalyptic number.

It is an amenable number.

46781213 is a deficient number, since it is larger than the sum of its proper divisors (1).

46781213 is an equidigital number, since it uses as much as digits as its factorization.

46781213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 46781213 is about 6839.6793053476. The cubic root of 46781213 is about 360.3217622255.

Adding to 46781213 its reverse (31218764), we get a palindrome (77999977).

The spelling of 46781213 in words is "forty-six million, seven hundred eighty-one thousand, two hundred thirteen".