1031213111193 has 12 divisors (see below), whose sum is σ = 1490221916820. Its totient is φ = 687156084096.

The previous prime is 1031213111191. The next prime is 1031213111197. The reversal of 1031213111193 is 3911113121301.

1031213111193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 333007476624 + 698205634569 = 577068^2 + 835587^2 .

It is not a de Polignac number, because 1031213111193 - 2¹ = 1031213111191 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1031213111191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26589828 + ... + 26628581.

It is an arithmetic number, because the mean of its divisors is an integer number (124185159735).

Almost surely, 2^{1031213111193} is an apocalyptic number.

It is an amenable number.

1031213111193 is a deficient number, since it is larger than the sum of its proper divisors (459008805627).

1031213111193 is a wasteful number, since it uses less digits than its factorization.

1031213111193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53220568 (or 53220565 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

Adding to 1031213111193 its reverse (3911113121301), we get a palindrome (4942326232494).

The spelling of 1031213111193 in words is "one trillion, thirty-one billion, two hundred thirteen million, one hundred eleven thousand, one hundred ninety-three".