20306403346 has 32 divisors (see below), whose sum is σ = 32208720768. Its totient is φ = 9582270720.

The previous prime is 20306403301. The next prime is 20306403353. The reversal of 20306403346 is 64330460302.

It is a super-3 number, since 3×20306403346³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3360640 + ... + 3366676.

It is an arithmetic number, because the mean of its divisors is an integer number (1006522524).

Almost surely, 2^20306403346 is an apocalyptic number.

20306403346 is a deficient number, since it is larger than the sum of its proper divisors (11902317422).

20306403346 is a wasteful number, since it uses less digits than its factorization.

20306403346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7026.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 20306403346 its reverse (64330460302), we get a palindrome (84636863648).

The spelling of 20306403346 in words is "twenty billion, three hundred six million, four hundred three thousand, three hundred forty-six".