308631401 has 8 divisors (see below), whose sum is σ = 332923080. Its totient is φ = 284418432.

The previous prime is 308631377. The next prime is 308631403. The reversal of 308631401 is 104136803.

It can be written as a sum of positive squares in 4 ways, for example, as 61387225 + 247244176 = 7835^2 + 15724^2 .

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 308631401 - 2²² = 304437097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (308631403) 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, 11396 + ... + 27333.

It is an arithmetic number, because the mean of its divisors is an integer number (41615385).

Almost surely, 2^308631401 is an apocalyptic number.

It is an amenable number.

308631401 is a deficient number, since it is larger than the sum of its proper divisors (24291679).

308631401 is a wasteful number, since it uses less digits than its factorization.

308631401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39355.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 308631401 is about 17567.9082704800. The cubic root of 308631401 is about 675.7925038325.

The spelling of 308631401 in words is "three hundred eight million, six hundred thirty-one thousand, four hundred one".