103131100021331 has 4 divisors (see below), whose sum is σ = 103266620521464. Its totient is φ = 102995579521200.

The previous prime is 103131100021297. The next prime is 103131100021337. The reversal of 103131100021331 is 133120001131301.

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 103131100021331 - 2¹⁰ = 103131100020307 is a prime.

It is a super-2 number, since 2×103131100021331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103131100021337) 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, 67760248925 + ... + 67760250446.

It is an arithmetic number, because the mean of its divisors is an integer number (25816655130366).

Almost surely, 2^{103131100021331} is an apocalyptic number.

103131100021331 is a deficient number, since it is larger than the sum of its proper divisors (135520500133).

103131100021331 is an equidigital number, since it uses as much as digits as its factorization.

103131100021331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135520500132.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 103131100021331 its reverse (133120001131301), we get a palindrome (236251101152632).

The spelling of 103131100021331 in words is "one hundred three trillion, one hundred thirty-one billion, one hundred million, twenty-one thousand, three hundred thirty-one".