2131440029 has 2 divisors, whose sum is σ = 2131440030. Its totient is φ = 2131440028.

The previous prime is 2131439983. The next prime is 2131440041. The reversal of 2131440029 is 9200441312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1820728900 + 310711129 = 42670^2 + 17627^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131440029 - 2⁸ = 2131439773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131440089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065720014 + 1065720015.

It is an arithmetic number, because the mean of its divisors is an integer number (1065720015).

Almost surely, 2^2131440029 is an apocalyptic number.

It is an amenable number.

2131440029 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131440029 is an equidigital number, since it uses as much as digits as its factorization.

2131440029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2131440029 is about 46167.5213651329. The cubic root of 2131440029 is about 1286.9382406685.

The spelling of 2131440029 in words is "two billion, one hundred thirty-one million, four hundred forty thousand, twenty-nine".