2102030313231 has 4 divisors (see below), whose sum is σ = 2802707084312. Its totient is φ = 1401353542152.

The previous prime is 2102030313209. The next prime is 2102030313233. The reversal of 2102030313231 is 1323130302012.

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

It is not a de Polignac number, because 2102030313231 - 2¹⁸ = 2102030051087 is a prime.

It is a super-2 number, since 2×2102030313231² (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 = 2102030313198 and 2102030313207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102030313233) 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, 350338385536 + ... + 350338385541.

It is an arithmetic number, because the mean of its divisors is an integer number (700676771078).

Almost surely, 2^{2102030313231} is an apocalyptic number.

2102030313231 is a deficient number, since it is larger than the sum of its proper divisors (700676771081).

2102030313231 is an equidigital number, since it uses as much as digits as its factorization.

2102030313231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700676771080.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 2102030313231 its reverse (1323130302012), we get a palindrome (3425160615243).

The spelling of 2102030313231 in words is "two trillion, one hundred two billion, thirty million, three hundred thirteen thousand, two hundred thirty-one".