1012312131203 has 4 divisors (see below), whose sum is σ = 1012519960368. Its totient is φ = 1012104302040.

The previous prime is 1012312131197. The next prime is 1012312131217. The reversal of 1012312131203 is 3021312132101.

It is a happy number.

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 1012312131203 - 2¹⁸ = 1012311869059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012312131403) 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, 103907276 + ... + 103917017.

It is an arithmetic number, because the mean of its divisors is an integer number (253129990092).

Almost surely, 2^{1012312131203} is an apocalyptic number.

1012312131203 is a deficient number, since it is larger than the sum of its proper divisors (207829165).

1012312131203 is an equidigital number, since it uses as much as digits as its factorization.

1012312131203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207829164.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1012312131203 its reverse (3021312132101), we get a palindrome (4033624263304).

The spelling of 1012312131203 in words is "one trillion, twelve billion, three hundred twelve million, one hundred thirty-one thousand, two hundred three".