1311422401 has 4 divisors (see below), whose sum is σ = 1311658452. Its totient is φ = 1311186352.

The previous prime is 1311422377. The next prime is 1311422459. The reversal of 1311422401 is 1042241131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 356303376 + 955119025 = 18876^2 + 30905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311422401 - 2²³ = 1303033793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311422501) 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, 109486 + ... + 120871.

It is an arithmetic number, because the mean of its divisors is an integer number (327914613).

Almost surely, 2^1311422401 is an apocalyptic number.

It is an amenable number.

1311422401 is a deficient number, since it is larger than the sum of its proper divisors (236051).

1311422401 is an equidigital number, since it uses as much as digits as its factorization.

1311422401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236050.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1311422401 is about 36213.5665324475. The cubic root of 1311422401 is about 1094.5800606792.

Adding to 1311422401 its reverse (1042241131), we get a palindrome (2353663532).

The spelling of 1311422401 in words is "one billion, three hundred eleven million, four hundred twenty-two thousand, four hundred one".