131121003 has 8 divisors (see below), whose sum is σ = 188276368. Its totient is φ = 80689824.

The previous prime is 131120989. The next prime is 131121031. The reversal of 131121003 is 300121131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131121003 - 2⁴ = 131120987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131121003.

It is not an unprimeable number, because it can be changed into a prime (131121503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1681000 + ... + 1681077.

It is an arithmetic number, because the mean of its divisors is an integer number (23534546).

Almost surely, 2^131121003 is an apocalyptic number.

131121003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131121003 is a deficient number, since it is larger than the sum of its proper divisors (57155365).

131121003 is a wasteful number, since it uses less digits than its factorization.

131121003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3362093.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 131121003 is about 11450.8079627597. The cubic root of 131121003 is about 508.0316323019.

Adding to 131121003 its reverse (300121131), we get a palindrome (431242134).

The spelling of 131121003 in words is "one hundred thirty-one million, one hundred twenty-one thousand, three".