220312377 has 12 divisors (see below), whose sum is σ = 332065344. Its totient is φ = 140488920.

The previous prime is 220312373. The next prime is 220312397. The reversal of 220312377 is 773213022.

It is a happy number.

220312377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220312377 - 2² = 220312373 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 220312377.

It is not an unprimeable number, because it can be changed into a prime (220312373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 531949 + ... + 532362.

It is an arithmetic number, because the mean of its divisors is an integer number (27672112).

Almost surely, 2^220312377 is an apocalyptic number.

It is an amenable number.

220312377 is a deficient number, since it is larger than the sum of its proper divisors (111752967).

220312377 is a wasteful number, since it uses less digits than its factorization.

220312377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064340 (or 1064337 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 220312377 is about 14842.9234654094. The cubic root of 220312377 is about 603.9666598924.

Adding to 220312377 its reverse (773213022), we get a palindrome (993525399).

The spelling of 220312377 in words is "two hundred twenty million, three hundred twelve thousand, three hundred seventy-seven".