312131402013401 has 4 divisors (see below), whose sum is σ = 313242189921204. Its totient is φ = 311020614105600.

The previous prime is 312131402013349. The next prime is 312131402013451. The reversal of 312131402013401 is 104310204131213.

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 219896986997776 + 92234415015625 = 14828924^2 + 9603875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312131402013401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312131402013451) 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, 555393953480 + ... + 555393954041.

It is an arithmetic number, because the mean of its divisors is an integer number (78310547480301).

Almost surely, 2^{312131402013401} is an apocalyptic number.

It is an amenable number.

312131402013401 is a deficient number, since it is larger than the sum of its proper divisors (1110787907803).

312131402013401 is a wasteful number, since it uses less digits than its factorization.

312131402013401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110787907802.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 312131402013401 its reverse (104310204131213), we get a palindrome (416441606144614).

The spelling of 312131402013401 in words is "three hundred twelve trillion, one hundred thirty-one billion, four hundred two million, thirteen thousand, four hundred one".