1312020003 has 8 divisors (see below), whose sum is σ = 1999268608. Its totient is φ = 749725704.

The previous prime is 1312019987. The next prime is 1312020019. The reversal of 1312020003 is 3000202131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1312019987) and next prime (1312020019).

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

It is not a de Polignac number, because 1312020003 - 2⁴ = 1312019987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312020023) 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, 31238551 + ... + 31238592.

It is an arithmetic number, because the mean of its divisors is an integer number (249908576).

Almost surely, 2^1312020003 is an apocalyptic number.

1312020003 is a deficient number, since it is larger than the sum of its proper divisors (687248605).

1312020003 is an equidigital number, since it uses as much as digits as its factorization.

1312020003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62477153.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1312020003 is about 36221.8166717242. The cubic root of 1312020003 is about 1094.7462984728.

Adding to 1312020003 its reverse (3000202131), we get a palindrome (4312222134).

The spelling of 1312020003 in words is "one billion, three hundred twelve million, twenty thousand, three".