2312400401 has 4 divisors (see below), whose sum is σ = 2448423972. Its totient is φ = 2176376832.

The previous prime is 2312400397. The next prime is 2312400437. The reversal of 2312400401 is 1040042132.

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 1509244801 + 803155600 = 38849^2 + 28340^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312400401 - 2² = 2312400397 is a prime.

It is a super-2 number, since 2×2312400401² = 10694391229089921602, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 136023553 = 2312400401 / (2 + 3 + 1 + 2 + 4 + 0 + 0 + 4 + 0 + 1).

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 2312400401.

It is not an unprimeable number, because it can be changed into a prime (2312400481) 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, 68011760 + ... + 68011793.

It is an arithmetic number, because the mean of its divisors is an integer number (612105993).

Almost surely, 2^2312400401 is an apocalyptic number.

It is an amenable number.

2312400401 is a deficient number, since it is larger than the sum of its proper divisors (136023571).

2312400401 is a wasteful number, since it uses less digits than its factorization.

2312400401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136023570.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2312400401 is about 48087.4245619372. The cubic root of 2312400401 is about 1322.3741328153.

Adding to 2312400401 its reverse (1040042132), we get a palindrome (3352442533).

The spelling of 2312400401 in words is "two billion, three hundred twelve million, four hundred thousand, four hundred one".