2131055431 has 2 divisors, whose sum is σ = 2131055432. Its totient is φ = 2131055430.

The previous prime is 2131055419. The next prime is 2131055467. The reversal of 2131055431 is 1345501312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2131055431 - 2²⁹ = 1594184519 is a prime.

It is a super-2 number, since 2×2131055431² = 9082794499989191522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2131055396 and 2131055405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131055491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065527715 + 1065527716.

It is an arithmetic number, because the mean of its divisors is an integer number (1065527716).

Almost surely, 2^2131055431 is an apocalyptic number.

2131055431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131055431 is an equidigital number, since it uses as much as digits as its factorization.

2131055431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2131055431 is about 46163.3559330342. The cubic root of 2131055431 is about 1286.8608307735.

Adding to 2131055431 its reverse (1345501312), we get a palindrome (3476556743).

The spelling of 2131055431 in words is "two billion, one hundred thirty-one million, fifty-five thousand, four hundred thirty-one".