220423145351 has 4 divisors (see below), whose sum is σ = 220437482304. Its totient is φ = 220408808400.

The previous prime is 220423145347. The next prime is 220423145389. The reversal of 220423145351 is 153541324022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220423145351 - 2² = 220423145347 is a prime.

It is a super-3 number, since 3×220423145351³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220423115351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7145390 + ... + 7176171.

It is an arithmetic number, because the mean of its divisors is an integer number (55109370576).

Almost surely, 2^220423145351 is an apocalyptic number.

220423145351 is a deficient number, since it is larger than the sum of its proper divisors (14336953).

220423145351 is a wasteful number, since it uses less digits than its factorization.

220423145351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14336952.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 220423145351 its reverse (153541324022), we get a palindrome (373964469373).

The spelling of 220423145351 in words is "two hundred twenty billion, four hundred twenty-three million, one hundred forty-five thousand, three hundred fifty-one".