312021430130404 has 24 divisors (see below), whose sum is σ = 546499823696568. Its totient is φ = 155878625575680.

The previous prime is 312021430130383. The next prime is 312021430130407. The reversal of 312021430130404 is 404031034120213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 235546370150400 + 76475059980004 = 15347520^2 + 8745002^2 .

It is not an unprimeable number, because it can be changed into a prime (312021430130407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 818288514 + ... + 818669734.

It is an arithmetic number, because the mean of its divisors is an integer number (22770825987357).

Almost surely, 2^{312021430130404} is an apocalyptic number.

It is an amenable number.

312021430130404 is a deficient number, since it is larger than the sum of its proper divisors (234478393566164).

312021430130404 is a wasteful number, since it uses less digits than its factorization.

312021430130404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553935 (or 553933 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 312021430130404 its reverse (404031034120213), we get a palindrome (716052464250617).

The spelling of 312021430130404 in words is "three hundred twelve trillion, twenty-one billion, four hundred thirty million, one hundred thirty thousand, four hundred four".