20312201234 has 8 divisors (see below), whose sum is σ = 32812017420. Its totient is φ = 9374862096.

The previous prime is 20312201227. The next prime is 20312201243. The reversal of 20312201234 is 43210221302.

It can be written as a sum of positive squares in 2 ways, for example, as 18701383009 + 1610818225 = 136753^2 + 40135^2 .

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

It is a super-2 number, since 2×20312201234² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390619229 + ... + 390619280.

Almost surely, 2^20312201234 is an apocalyptic number.

20312201234 is a deficient number, since it is larger than the sum of its proper divisors (12499816186).

20312201234 is a wasteful number, since it uses less digits than its factorization.

20312201234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781238524.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20312201234 its reverse (43210221302), we get a palindrome (63522422536).

The spelling of 20312201234 in words is "twenty billion, three hundred twelve million, two hundred one thousand, two hundred thirty-four".