1020312203403 has 8 divisors (see below), whose sum is σ = 1360553050000. Its totient is φ = 680139746208.

The previous prime is 1020312203399. The next prime is 1020312203447. The reversal of 1020312203403 is 3043022130201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020312203403 - 2² = 1020312203399 is a prime.

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 1020312203403.

It is not an unprimeable number, because it can be changed into a prime (1020312203203) 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, 17062528 + ... + 17122221.

It is an arithmetic number, because the mean of its divisors is an integer number (170069131250).

Almost surely, 2^{1020312203403} is an apocalyptic number.

1020312203403 is a deficient number, since it is larger than the sum of its proper divisors (340240846597).

1020312203403 is an equidigital number, since it uses as much as digits as its factorization.

1020312203403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34194701.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1020312203403 its reverse (3043022130201), we get a palindrome (4063334333604).

The spelling of 1020312203403 in words is "one trillion, twenty billion, three hundred twelve million, two hundred three thousand, four hundred three".