1213131003 has 8 divisors (see below), whose sum is σ = 1848580608. Its totient is φ = 693217704.

The previous prime is 1213130983. The next prime is 1213131041. The reversal of 1213131003 is 3001313121.

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

It is not a de Polignac number, because 1213131003 - 2⁸ = 1213130747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213130003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28884051 + ... + 28884092.

It is an arithmetic number, because the mean of its divisors is an integer number (231072576).

Almost surely, 2^1213131003 is an apocalyptic number.

1213131003 is a deficient number, since it is larger than the sum of its proper divisors (635449605).

1213131003 is an equidigital number, since it uses as much as digits as its factorization.

1213131003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57768153.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1213131003 is about 34830.0301894787. The cubic root of 1213131003 is about 1066.5205646355.

Adding to 1213131003 its reverse (3001313121), we get a palindrome (4214444124).

It can be divided in two parts, 12131 and 31003, that added together give a palindrome (43134).

The spelling of 1213131003 in words is "one billion, two hundred thirteen million, one hundred thirty-one thousand, three".