2401311331 has 4 divisors (see below), whose sum is σ = 2484115200. Its totient is φ = 2318507464.

The previous prime is 2401311239. The next prime is 2401311337. The reversal of 2401311331 is 1331131042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2401311331 - 2¹¹ = 2401309283 is a prime.

It is a super-2 number, since 2×2401311331² = 11532592216777983122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2401311299 and 2401311308.

It is not an unprimeable number, because it can be changed into a prime (2401311337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41401891 + ... + 41401948.

It is an arithmetic number, because the mean of its divisors is an integer number (621028800).

Almost surely, 2^2401311331 is an apocalyptic number.

2401311331 is a deficient number, since it is larger than the sum of its proper divisors (82803869).

2401311331 is an equidigital number, since it uses as much as digits as its factorization.

2401311331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82803868.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2401311331 is about 49003.1767439622. The cubic root of 2401311331 is about 1339.1097024828.

Adding to 2401311331 its reverse (1331131042), we get a palindrome (3732442373).

It can be divided in two parts, 24013 and 11331, that added together give a square (35344 = 188²).

The spelling of 2401311331 in words is "two billion, four hundred one million, three hundred eleven thousand, three hundred thirty-one".