2141312531 has 2 divisors, whose sum is σ = 2141312532. Its totient is φ = 2141312530.

The previous prime is 2141312497. The next prime is 2141312549. The reversal of 2141312531 is 1352131412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2141312531 - 2²² = 2137118227 is a prime.

It is a super-2 number, since 2×2141312531² = 9170438710835251922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2141312497 and 2141312506.

It is not a weakly prime, because it can be changed into another prime (2141311531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070656265 + 1070656266.

It is an arithmetic number, because the mean of its divisors is an integer number (1070656266).

Almost surely, 2^2141312531 is an apocalyptic number.

2141312531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141312531 is an equidigital number, since it uses as much as digits as its factorization.

2141312531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 23.

The square root of 2141312531 is about 46274.3182661830. The cubic root of 2141312531 is about 1288.9221473502.

Adding to 2141312531 its reverse (1352131412), we get a palindrome (3493443943).

The spelling of 2141312531 in words is "two billion, one hundred forty-one million, three hundred twelve thousand, five hundred thirty-one".