137321403 has 8 divisors (see below), whose sum is σ = 187353408. Its totient is φ = 89418504.

The previous prime is 137321389. The next prime is 137321419. The reversal of 137321403 is 304123731.

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

It is not a de Polignac number, because 137321403 - 2¹⁴ = 137305019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137321473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532125 + ... + 532382.

It is an arithmetic number, because the mean of its divisors is an integer number (23419176).

Almost surely, 2^137321403 is an apocalyptic number.

137321403 is a deficient number, since it is larger than the sum of its proper divisors (50032005).

137321403 is a wasteful number, since it uses less digits than its factorization.

137321403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064553.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 137321403 is about 11718.4215233964. The cubic root of 137321403 is about 515.9164916539.

The spelling of 137321403 in words is "one hundred thirty-seven million, three hundred twenty-one thousand, four hundred three".