10131989 has 4 divisors (see below), whose sum is σ = 11579424. Its totient is φ = 8684556.

The previous prime is 10131973. The next prime is 10132013. The reversal of 10131989 is 98913101.

10131989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10131989 - 2⁴ = 10131973 is a prime.

It is a super-2 number, since 2×10131989² = 205314402192242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723707 + ... + 723720.

It is an arithmetic number, because the mean of its divisors is an integer number (2894856).

Almost surely, 2^10131989 is an apocalyptic number.

It is an amenable number.

10131989 is a deficient number, since it is larger than the sum of its proper divisors (1447435).

10131989 is an equidigital number, since it uses as much as digits as its factorization.

10131989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447434.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 10131989 is about 3183.0785412867. The cubic root of 10131989 is about 216.3872012935.

The spelling of 10131989 in words is "ten million, one hundred thirty-one thousand, nine hundred eighty-nine".