131421003 has 32 divisors (see below), whose sum is σ = 208373760. Its totient is φ = 72109440.

The previous prime is 131420983. The next prime is 131421013. The reversal of 131421003 is 300124131.

It is not a de Polignac number, because 131421003 - 2⁹ = 131420491 is a prime.

It is a super-3 number, since 3×131421003³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (131421013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60313 + ... + 62453.

It is an arithmetic number, because the mean of its divisors is an integer number (6511680).

Almost surely, 2^131421003 is an apocalyptic number.

131421003 is a deficient number, since it is larger than the sum of its proper divisors (76952757).

131421003 is a wasteful number, since it uses less digits than its factorization.

131421003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 131421003 is about 11463.8999908408. The cubic root of 131421003 is about 508.4187897060.

Adding to 131421003 its reverse (300124131), we get a palindrome (431545134).

The spelling of 131421003 in words is "one hundred thirty-one million, four hundred twenty-one thousand, three".