2101431489 has 16 divisors (see below), whose sum is σ = 2967728832. Its totient is φ = 1318099968.

The previous prime is 2101431467. The next prime is 2101431491. The reversal of 2101431489 is 9841341012.

It is a happy number.

It is not a de Polignac number, because 2101431489 - 2⁷ = 2101431361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101431419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213102 + ... + 222744.

It is an arithmetic number, because the mean of its divisors is an integer number (185483052).

Almost surely, 2^2101431489 is an apocalyptic number.

It is an amenable number.

2101431489 is a deficient number, since it is larger than the sum of its proper divisors (866297343).

2101431489 is a wasteful number, since it uses less digits than its factorization.

2101431489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13936.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 2101431489 is about 45841.3731142513. The cubic root of 2101431489 is about 1280.8700727050.

The spelling of 2101431489 in words is "two billion, one hundred one million, four hundred thirty-one thousand, four hundred eighty-nine".