20311202 has 4 divisors (see below), whose sum is σ = 30466806. Its totient is φ = 10155600.

The previous prime is 20311189. The next prime is 20311211. The reversal of 20311202 is 20211302.

It is a happy number.

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., 14205361 + 6105841 = 3769^2 + 2471^2 .

It is a zygodrome in base 7.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5077799 + ... + 5077802.

Almost surely, 2^20311202 is an apocalyptic number.

20311202 is a deficient number, since it is larger than the sum of its proper divisors (10155604).

20311202 is a wasteful number, since it uses less digits than its factorization.

20311202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10155603.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20311202 is about 4506.7950918585. The cubic root of 20311202 is about 272.8424088345.

Adding to 20311202 its reverse (20211302), we get a palindrome (40522504).

The spelling of 20311202 in words is "twenty million, three hundred eleven thousand, two hundred two".