2113431012331 has 4 divisors (see below), whose sum is σ = 2113446811464. Its totient is φ = 2113415213200.

The previous prime is 2113431012283. The next prime is 2113431012349. The reversal of 2113431012331 is 1332101343112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2113431012331 - 2¹¹ = 2113431010283 is a prime.

It is a super-2 number, since 2×2113431012331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2113431012296 and 2113431012305.

It is not an unprimeable number, because it can be changed into a prime (2113431012391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7697185 + ... + 7967026.

It is an arithmetic number, because the mean of its divisors is an integer number (528361702866).

Almost surely, 2^{2113431012331} is an apocalyptic number.

2113431012331 is a deficient number, since it is larger than the sum of its proper divisors (15799133).

2113431012331 is a wasteful number, since it uses less digits than its factorization.

2113431012331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15799132.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 2113431012331 its reverse (1332101343112), we get a palindrome (3445532355443).

The spelling of 2113431012331 in words is "two trillion, one hundred thirteen billion, four hundred thirty-one million, twelve thousand, three hundred thirty-one".