20031132349 has 2 divisors, whose sum is σ = 20031132350. Its totient is φ = 20031132348.

The previous prime is 20031132307. The next prime is 20031132371. The reversal of 20031132349 is 94323113002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18684976249 + 1346156100 = 136693^2 + 36690^2 .

It is a cyclic number.

It is not a de Polignac number, because 20031132349 - 2⁹ = 20031131837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20031132379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10015566174 + 10015566175.

It is an arithmetic number, because the mean of its divisors is an integer number (10015566175).

Almost surely, 2^20031132349 is an apocalyptic number.

It is an amenable number.

20031132349 is a deficient number, since it is larger than the sum of its proper divisors (1).

20031132349 is an equidigital number, since it uses as much as digits as its factorization.

20031132349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 20031132349 in words is "twenty billion, thirty-one million, one hundred thirty-two thousand, three hundred forty-nine".