20111030402 has 8 divisors (see below), whose sum is σ = 30167167116. Its totient is φ = 10055308032.

The previous prime is 20111030371. The next prime is 20111030441. The reversal of 20111030402 is 20403011102.

It can be written as a sum of positive squares in 2 ways, for example, as 18176702041 + 1934328361 = 134821^2 + 43981^2 .

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

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, 90458 + ... + 220010.

Almost surely, 2^20111030402 is an apocalyptic number.

20111030402 is a deficient number, since it is larger than the sum of its proper divisors (10056136714).

20111030402 is a wasteful number, since it uses less digits than its factorization.

20111030402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207172.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20111030402 its reverse (20403011102), we get a palindrome (40514041504).

The spelling of 20111030402 in words is "twenty billion, one hundred eleven million, thirty thousand, four hundred two".