20311232213092 has 24 divisors (see below), whose sum is σ = 38849567500800. Its totient is φ = 9249897022080.

The previous prime is 20311232213023. The next prime is 20311232213099. The reversal of 20311232213092 is 29031223211302.

It is a super-2 number, since 2×20311232213092² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (20311232213099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4817652592 + ... + 4817656807.

It is an arithmetic number, because the mean of its divisors is an integer number (1618731979200).

Almost surely, 2^{20311232213092} is an apocalyptic number.

It is an amenable number.

20311232213092 is a deficient number, since it is larger than the sum of its proper divisors (18538335287708).

20311232213092 is a wasteful number, since it uses less digits than its factorization.

20311232213092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9635309451 (or 9635309449 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

Adding to 20311232213092 its reverse (29031223211302), we get a palindrome (49342455424394).

The spelling of 20311232213092 in words is "twenty trillion, three hundred eleven billion, two hundred thirty-two million, two hundred thirteen thousand, ninety-two".