20311231014213 has 32 divisors (see below), whose sum is σ = 27617127033600. Its totient is φ = 13274563468800.

The previous prime is 20311231014211. The next prime is 20311231014251. The reversal of 20311231014213 is 31241013211302.

It is not a de Polignac number, because 20311231014213 - 2¹ = 20311231014211 is a prime.

It is a super-2 number, since 2×20311231014213² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311231014211) 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, 834844633 + ... + 834868961.

It is an arithmetic number, because the mean of its divisors is an integer number (863035219800).

Almost surely, 2^{20311231014213} is an apocalyptic number.

It is an amenable number.

20311231014213 is a deficient number, since it is larger than the sum of its proper divisors (7305896019387).

20311231014213 is a wasteful number, since it uses less digits than its factorization.

20311231014213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39373.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 20311231014213 its reverse (31241013211302), we get a palindrome (51552244225515).

The spelling of 20311231014213 in words is "twenty trillion, three hundred eleven billion, two hundred thirty-one million, fourteen thousand, two hundred thirteen".