20311001453442 has 64 divisors (see below), whose sum is σ = 46462514411520. Its totient is φ = 5798473693056.

The previous prime is 20311001453441. The next prime is 20311001453489. The reversal of 20311001453442 is 24435410011302.

It is not an unprimeable number, because it can be changed into a prime (20311001453441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381278893 + ... + 381332159.

It is an arithmetic number, because the mean of its divisors is an integer number (725976787680).

Almost surely, 2^{20311001453442} is an apocalyptic number.

20311001453442 is an abundant number, since it is smaller than the sum of its proper divisors (26151512958078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20311001453442 is a wasteful number, since it uses less digits than its factorization.

20311001453442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60415.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 20311001453442 its reverse (24435410011302), we get a palindrome (44746411464744).

The spelling of 20311001453442 in words is "twenty trillion, three hundred eleven billion, one million, four hundred fifty-three thousand, four hundred forty-two".