2131333320031 has 4 divisors (see below), whose sum is σ = 2171547156312. Its totient is φ = 2091119483752.

The previous prime is 2131333320007. The next prime is 2131333320041. The reversal of 2131333320031 is 1300233331312.

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 2131333320031 - 2²¹ = 2131331222879 is a prime.

It is a super-2 number, since 2×2131333320031² (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 = 2131333319978 and 2131333320005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131333320041) 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, 20106918061 + ... + 20106918166.

It is an arithmetic number, because the mean of its divisors is an integer number (542886789078).

Almost surely, 2^{2131333320031} is an apocalyptic number.

2131333320031 is a deficient number, since it is larger than the sum of its proper divisors (40213836281).

2131333320031 is an equidigital number, since it uses as much as digits as its factorization.

2131333320031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40213836280.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 2131333320031 its reverse (1300233331312), we get a palindrome (3431566651343).

The spelling of 2131333320031 in words is "two trillion, one hundred thirty-one billion, three hundred thirty-three million, three hundred twenty thousand, thirty-one".