312190400401 has 4 divisors (see below), whose sum is σ = 340571345904. Its totient is φ = 283809454900.

The previous prime is 312190400399. The next prime is 312190400407. The reversal of 312190400401 is 104004091213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312190400401 - 2¹ = 312190400399 is a prime.

It is a super-2 number, since 2×312190400401² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312190400407) 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, 14190472735 + ... + 14190472756.

It is an arithmetic number, because the mean of its divisors is an integer number (85142836476).

Almost surely, 2^312190400401 is an apocalyptic number.

It is an amenable number.

312190400401 is a deficient number, since it is larger than the sum of its proper divisors (28380945503).

312190400401 is a wasteful number, since it uses less digits than its factorization.

312190400401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28380945502.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 312190400401 its reverse (104004091213), we get a palindrome (416194491614).

The spelling of 312190400401 in words is "three hundred twelve billion, one hundred ninety million, four hundred thousand, four hundred one".