10203131311 has 4 divisors (see below), whose sum is σ = 10376065800. Its totient is φ = 10030196824.

The previous prime is 10203131303. The next prime is 10203131317. The reversal of 10203131311 is 11313130201.

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

It is not a de Polignac number, because 10203131311 - 2³ = 10203131303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203131317) 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, 86467156 + ... + 86467273.

It is an arithmetic number, because the mean of its divisors is an integer number (2594016450).

Almost surely, 2^10203131311 is an apocalyptic number.

10203131311 is a deficient number, since it is larger than the sum of its proper divisors (172934489).

10203131311 is an equidigital number, since it uses as much as digits as its factorization.

10203131311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172934488.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 10203131311 its reverse (11313130201), we get a palindrome (21516261512).

The spelling of 10203131311 in words is "ten billion, two hundred three million, one hundred thirty-one thousand, three hundred eleven".