312021430130403 has 32 divisors (see below), whose sum is σ = 534812353976320. Its totient is φ = 178297960065768.

The previous prime is 312021430130383. The next prime is 312021430130407. The reversal of 312021430130403 is 304031034120213.

It is a happy number.

312021430130403 is a `hidden beast` number, since 3 + 1 + 2 + 0 + 214 + 30 + 13 + 0 + 403 = 666.

It is not a de Polignac number, because 312021430130403 - 2⁹ = 312021430129891 is a prime.

It is a super-2 number, since 2×312021430130403² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 10190768875 + ... + 10190799492.

It is an arithmetic number, because the mean of its divisors is an integer number (16712886061760).

Almost surely, 2^{312021430130403} is an apocalyptic number.

312021430130403 is a deficient number, since it is larger than the sum of its proper divisors (222790923845917).

312021430130403 is an frugal number, since it uses more digits than its factorization.

312021430130403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20381568395 (or 20381568377 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 312021430130403 its reverse (304031034120213), we get a palindrome (616052464250616).

The spelling of 312021430130403 in words is "three hundred twelve trillion, twenty-one billion, four hundred thirty million, one hundred thirty thousand, four hundred three".