311403401 has 12 divisors (see below), whose sum is σ = 323304912. Its totient is φ = 299925000.

The previous prime is 311403383. The next prime is 311403403. The reversal of 311403401 is 104304113.

It is not a de Polignac number, because 311403401 - 2¹⁴ = 311387017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311403401.

It is not an unprimeable number, because it can be changed into a prime (311403403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240566 + ... + 241856.

It is an arithmetic number, because the mean of its divisors is an integer number (26942076).

Almost surely, 2^311403401 is an apocalyptic number.

311403401 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

311403401 is a deficient number, since it is larger than the sum of its proper divisors (11901511).

311403401 is a wasteful number, since it uses less digits than its factorization.

311403401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604 (or 1573 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 311403401 is about 17646.6257681178. The cubic root of 311403401 is about 677.8097064886.

Adding to 311403401 its reverse (104304113), we get a palindrome (415707514).

The spelling of 311403401 in words is "three hundred eleven million, four hundred three thousand, four hundred one".