20303023351 has 4 divisors (see below), whose sum is σ = 21864794392. Its totient is φ = 18741252312.

The previous prime is 20303023261. The next prime is 20303023361. The reversal of 20303023351 is 15332030302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15332030302 = 2 ⋅7666015151.

It is a cyclic number.

It is not a de Polignac number, because 20303023351 - 2²¹ = 20300926199 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 (20303023361) 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, 780885501 + ... + 780885526.

It is an arithmetic number, because the mean of its divisors is an integer number (5466198598).

Almost surely, 2^20303023351 is an apocalyptic number.

20303023351 is a deficient number, since it is larger than the sum of its proper divisors (1561771041).

20303023351 is a wasteful number, since it uses less digits than its factorization.

20303023351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561771040.

The product of its (nonzero) digits is 1620, while the sum is 22.

Adding to 20303023351 its reverse (15332030302), we get a palindrome (35635053653).

The spelling of 20303023351 in words is "twenty billion, three hundred three million, twenty-three thousand, three hundred fifty-one".