20550431234 has 8 divisors (see below), whose sum is σ = 30838557180. Its totient is φ = 10270912176.

The previous prime is 20550431233. The next prime is 20550431263. The reversal of 20550431234 is 43213405502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19811407009 + 739024225 = 140753^2 + 27185^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20550431197 and 20550431206.

It is not an unprimeable number, because it can be changed into a prime (20550431233) 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, 2145749 + ... + 2155304.

Almost surely, 2^20550431234 is an apocalyptic number.

20550431234 is a deficient number, since it is larger than the sum of its proper divisors (10288125946).

20550431234 is a wasteful number, since it uses less digits than its factorization.

20550431234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4303444.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 20550431234 its reverse (43213405502), we get a palindrome (63763836736).

The spelling of 20550431234 in words is "twenty billion, five hundred fifty million, four hundred thirty-one thousand, two hundred thirty-four".