20110312402 has 4 divisors (see below), whose sum is σ = 30165468606. Its totient is φ = 10055156200.

The previous prime is 20110312399. The next prime is 20110312403. The reversal of 20110312402 is 20421301102.

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

It can be written as a sum of positive squares in only one way, i.e., 19441003761 + 669308641 = 139431^2 + 25871^2 .

It is not an unprimeable number, because it can be changed into a prime (20110312403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5027578099 + ... + 5027578102.

Almost surely, 2^20110312402 is an apocalyptic number.

20110312402 is a deficient number, since it is larger than the sum of its proper divisors (10055156204).

20110312402 is a wasteful number, since it uses less digits than its factorization.

20110312402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10055156203.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20110312402 its reverse (20421301102), we get a palindrome (40531613504).

The spelling of 20110312402 in words is "twenty billion, one hundred ten million, three hundred twelve thousand, four hundred two".