123220351 has 6 divisors (see below), whose sum is σ = 124035000. Its totient is φ = 122411016.

The previous prime is 123220337. The next prime is 123220421. The reversal of 123220351 is 153022321.

It is not a de Polignac number, because 123220351 - 2¹⁷ = 123089279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123220051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22150 + ... + 27148.

It is an arithmetic number, because the mean of its divisors is an integer number (20672500).

Almost surely, 2^123220351 is an apocalyptic number.

123220351 is a deficient number, since it is larger than the sum of its proper divisors (814649).

123220351 is an frugal number, since it uses more digits than its factorization.

123220351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5313 (or 5156 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 123220351 is about 11100.4662514689. The cubic root of 123220351 is about 497.6157837633.

Adding to 123220351 its reverse (153022321), we get a palindrome (276242672).

The spelling of 123220351 in words is "one hundred twenty-three million, two hundred twenty thousand, three hundred fifty-one".