20302213131 has 24 divisors (see below), whose sum is σ = 31089561984. Its totient is φ = 12744190080.

The previous prime is 20302213103. The next prime is 20302213147. The reversal of 20302213131 is 13131220302.

20302213131 is a `hidden beast` number, since 20 + 302 + 213 + 131 = 666.

It is not a de Polignac number, because 20302213131 - 2¹³ = 20302204939 is a prime.

It is a super-2 number, since 2×20302213131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20302213181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 973026 + ... + 993671.

It is an arithmetic number, because the mean of its divisors is an integer number (1295398416).

Almost surely, 2^20302213131 is an apocalyptic number.

20302213131 is a deficient number, since it is larger than the sum of its proper divisors (10787348853).

20302213131 is a wasteful number, since it uses less digits than its factorization.

20302213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966771 (or 1966768 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20302213131 its reverse (13131220302), we get a palindrome (33433433433).

It can be divided in two parts, 203022 and 13131, that added together give a triangular number (216153 = T₆₅₇).

The spelling of 20302213131 in words is "twenty billion, three hundred two million, two hundred thirteen thousand, one hundred thirty-one".