312403401 has 6 divisors (see below), whose sum is σ = 451249370. Its totient is φ = 208268928.

The previous prime is 312403391. The next prime is 312403423. The reversal of 312403401 is 104304213.

It can be written as a sum of positive squares in only one way, i.e., 281434176 + 30969225 = 16776^2 + 5565^2 .

It is not a de Polignac number, because 312403401 - 2⁹ = 312402889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (312403001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17355736 + ... + 17355753.

Almost surely, 2^312403401 is an apocalyptic number.

It is an amenable number.

312403401 is a deficient number, since it is larger than the sum of its proper divisors (138845969).

312403401 is a wasteful number, since it uses less digits than its factorization.

312403401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34711495 (or 34711492 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 312403401 is about 17674.9370861681. The cubic root of 312403401 is about 678.5344742688.

Adding to 312403401 its reverse (104304213), we get a palindrome (416707614).

The spelling of 312403401 in words is "three hundred twelve million, four hundred three thousand, four hundred one".