2231901929 has 2 divisors, whose sum is σ = 2231901930. Its totient is φ = 2231901928.

The previous prime is 2231901913. The next prime is 2231901989. The reversal of 2231901929 is 9291091322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1306099600 + 925802329 = 36140^2 + 30427^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231901929 - 2⁴ = 2231901913 is a prime.

It is a super-3 number, since 3×2231901929³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2231901892 and 2231901901.

It is not a weakly prime, because it can be changed into another prime (2231901989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115950964 + 1115950965.

It is an arithmetic number, because the mean of its divisors is an integer number (1115950965).

Almost surely, 2^2231901929 is an apocalyptic number.

It is an amenable number.

2231901929 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231901929 is an equidigital number, since it uses as much as digits as its factorization.

2231901929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 2231901929 is about 47243.0093135482. The cubic root of 2231901929 is about 1306.8478744927.

The spelling of 2231901929 in words is "two billion, two hundred thirty-one million, nine hundred one thousand, nine hundred twenty-nine".