131973403 has 8 divisors (see below), whose sum is σ = 138171600. Its totient is φ = 125885088.

The previous prime is 131973389. The next prime is 131973409. The reversal of 131973403 is 304379131.

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

It is a cyclic number.

It is not a de Polignac number, because 131973403 - 2¹⁷ = 131842331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131973409) 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, 25008 + ... + 29821.

It is an arithmetic number, because the mean of its divisors is an integer number (17271450).

Almost surely, 2^131973403 is an apocalyptic number.

131973403 is a deficient number, since it is larger than the sum of its proper divisors (6198197).

131973403 is an equidigital number, since it uses as much as digits as its factorization.

131973403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54941.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 131973403 is about 11487.9677489102. The cubic root of 131973403 is about 509.1301370833.

The spelling of 131973403 in words is "one hundred thirty-one million, nine hundred seventy-three thousand, four hundred three".