2131012823 has 2 divisors, whose sum is σ = 2131012824. Its totient is φ = 2131012822.

The previous prime is 2131012777. The next prime is 2131012831. The reversal of 2131012823 is 3282101312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2131012823 - 2⁸ = 2131012567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131012523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065506411 + 1065506412.

It is an arithmetic number, because the mean of its divisors is an integer number (1065506412).

Almost surely, 2^2131012823 is an apocalyptic number.

2131012823 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131012823 is an equidigital number, since it uses as much as digits as its factorization.

2131012823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2131012823 is about 46162.8944391489. The cubic root of 2131012823 is about 1286.8522542828.

The spelling of 2131012823 in words is "two billion, one hundred thirty-one million, twelve thousand, eight hundred twenty-three".