4231120991 has 2 divisors, whose sum is σ = 4231120992. Its totient is φ = 4231120990.

The previous prime is 4231120981. The next prime is 4231121003. The reversal of 4231120991 is 1990211324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4231120991 - 2¹⁴ = 4231104607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4231120921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2115560495 + 2115560496.

It is an arithmetic number, because the mean of its divisors is an integer number (2115560496).

Almost surely, 2^4231120991 is an apocalyptic number.

4231120991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4231120991 is an equidigital number, since it uses as much as digits as its factorization.

4231120991 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 32.

The square root of 4231120991 is about 65047.0675049998. The cubic root of 4231120991 is about 1617.4038831682.

The spelling of 4231120991 in words is "four billion, two hundred thirty-one million, one hundred twenty thousand, nine hundred ninety-one".