20311313132 has 72 divisors (see below), whose sum is σ = 40510789200. Its totient is φ = 8893413760.

The previous prime is 20311313081. The next prime is 20311313147. The reversal of 20311313132 is 23131311302.

It is a super-2 number, since 2×20311313132² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 7142903 + ... + 7145745.

It is an arithmetic number, because the mean of its divisors is an integer number (562649850).

Almost surely, 2^20311313132 is an apocalyptic number.

20311313132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20311313132 is a deficient number, since it is larger than the sum of its proper divisors (20199476068).

20311313132 is a wasteful number, since it uses less digits than its factorization.

20311313132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3407 (or 3394 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 20311313132 its reverse (23131311302), we get a palindrome (43442624434).

The spelling of 20311313132 in words is "twenty billion, three hundred eleven million, three hundred thirteen thousand, one hundred thirty-two".