2140021031 has 2 divisors, whose sum is σ = 2140021032. Its totient is φ = 2140021030.

The previous prime is 2140021021. The next prime is 2140021043. The reversal of 2140021031 is 1301200412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2140021031 - 2¹⁰ = 2140020007 is a prime.

It is a super-2 number, since 2×2140021031² = 9159380026244605922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2140020997 and 2140021015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140021021) 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, 1070010515 + 1070010516.

It is an arithmetic number, because the mean of its divisors is an integer number (1070010516).

Almost surely, 2^2140021031 is an apocalyptic number.

2140021031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140021031 is an equidigital number, since it uses as much as digits as its factorization.

2140021031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2140021031 is about 46260.3613366779. The cubic root of 2140021031 is about 1288.6629639896.

Adding to 2140021031 its reverse (1301200412), we get a palindrome (3441221443).

The spelling of 2140021031 in words is "two billion, one hundred forty million, twenty-one thousand, thirty-one".