20311131131010 has 96 divisors (see below), whose sum is σ = 55619982288000. Its totient is φ = 5132391416064.

The previous prime is 20311131130993. The next prime is 20311131131059. The reversal of 20311131131010 is 1013113111302.

20311131131010 is a `hidden beast` number, since 2 + 0 + 31 + 1 + 1 + 311 + 310 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45629635 + ... + 46072614.

It is an arithmetic number, because the mean of its divisors is an integer number (579374815500).

Almost surely, 2^{20311131131010} is an apocalyptic number.

20311131131010 is an abundant number, since it is smaller than the sum of its proper divisors (35308851156990).

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

20311131131010 is a wasteful number, since it uses less digits than its factorization.

20311131131010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91702392 (or 91702389 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 20311131131010 its reverse (1013113111302), we get a palindrome (21324244242312).

The spelling of 20311131131010 in words is "twenty trillion, three hundred eleven billion, one hundred thirty-one million, one hundred thirty-one thousand, ten".