1213132310103 has 48 divisors (see below), whose sum is σ = 1886346718560. Its totient is φ = 691468694784.

The previous prime is 1213132310083. The next prime is 1213132310153. The reversal of 1213132310103 is 3010132313121.

It is a happy number.

It is not a de Polignac number, because 1213132310103 - 2¹³ = 1213132301911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1213132310103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213132310153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 182340325 + ... + 182346977.

It is an arithmetic number, because the mean of its divisors is an integer number (39298889970).

Almost surely, 2^{1213132310103} is an apocalyptic number.

1213132310103 is a deficient number, since it is larger than the sum of its proper divisors (673214408457).

1213132310103 is a wasteful number, since it uses less digits than its factorization.

1213132310103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9616 (or 9609 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1213132310103 its reverse (3010132313121), we get a palindrome (4223264623224).

The spelling of 1213132310103 in words is "one trillion, two hundred thirteen billion, one hundred thirty-two million, three hundred ten thousand, one hundred three".